Structural Square Tubing Manufacturer

Sunnyda Structural Square Tubing

Sunnyda structural square tubing has a high strength-to-weight ratio, excellent compression support characteristics and excellent torsional resistance. With this material, it can allow you to readily bent, form, punched and drilled. It also can improve the ease of fabrication in the field as well.

Sunnyda structural square tubing features inside and outside radius corners, with a protruding interior weld seam. This is ideal for all structural applications where greater strength and superior corrosion resistance are required.

If you plan to use structural square tubing, you never go wrong. Sunnyda structural square tubing is bright and easy to maintain, which provides for a modern and attractive appearance. providing superior compression performance and significant weight savings.

Sunnyda is known as a premier manufacturer, supplier, and exporter of structural square tubing in a different market. We have more than 10 years of experience in exporting structural square tubing. You can felt satisfying service and you can get the best products when you rely on us.

We can deliver your structural square tubing in a short time. For your urgent project needs, Sunnyda is the best and great choice for you. At Sunnyda you can get awesome structural square tubing with SO9001 and ISO14001 certification. For that reason, you can guarantee excellent service from us.

Sunnyda specializes in manufacturing and developing different kinds of structural square tubing. We are glad to work with you for a long time and give you the best service you deserve. You will never regret if you are going to purchase your structural square tubing from us.

Sunnyda offers great and durable structural square tubing at very affordable prices. Sunnyda is the best structural square tubing manufacturer and a business partner that will help you to bring your business to a higher level.

For more questions and any inquiries feel free to contact us, we will never ignore you!

Structural Square Tubing

Table of Contents

Introduction
Q1: What Is Structural Square Tubing?
Q2: What Are The Applications Of Structural Square Tubing?
Q3: What is the production process for Structural Square Tubing?
Q4: What Are The Dimensions / Sizes Of Structural Square Tubing?
Q5: What Are The Lengths Of Structural Square Tubing?
Q6: What Are the Grades Of Structural Square Tubing?
Q7: What Are the Structural Square Tubing Finishing Types?
Q8: What Type Of Structural Square Tubing Ends?
Q9: Can Structural Square Tubing Be Galvanized?
Q10: What Are The Advantages Of Galvanized Structural Square Tubing?
Q11: What Are The Types Of Structural Square Tubing?
Q12: What Type Of Corrosion / Rust Protection Can Be Applied To Structural Square Tubing?
Q13: What Coating Types Can Be Applied To Structural Square Tubing?
Q14: What Are The Specifications Of Structural Square Tubing?
Q15: What Are the Standards Of Your Structural Square Tubing?
Q16: What Are The Structural Square Tubing Related Services?
Q17: What Is The Minimum Order Quantity For Structural Square Tubing?
Q18: Is Structural Square Tubing Complies With Local and International Building Codes?
Q19: Does Structural Square Tubing Made In China Complies With Local And International Building Code and Regulations?
Q20: What Are The Structural Square Tubing Warranties Offered?
Q21: Does Manufacturer Provide Structural Square Tubing Test Certificates / Reports?
Q22: How To Buy Structural Square Tubing From China’s Best Manufacturers?
Q23: How To Ship Structural Square Tubing From China?
Q24: Why Choose Sunnyda’s Structural Square Tubing?
Q25: Are You The Main Manufacturer Or A Trading Company of Structural Square Tubing?
Q26: Do You Export Structural Square Tubing Worldwide?
Q27: Do You Keep Structural Square Tubing In Stock?
Q28: Do You Accept Third Party Inspection For Structural Square Tubing?
Q29: When Can I get Structural Square Tubing Order Delivered?
Q30: Where Are You Located? Can I Visit Your Head Office / Warehouse to see Structural Square Tubing?
Q31: I Placed A Structural Square Tubing Order, Can You update Me about My Order Status?
Q32: Do You Provide Pre-sales And After-Sales Customer Service for Structural Square Tubing?
Q33: What Payment Methods and Terms Do You Accept For Structural Square Tubing Purchases?
Q34: I have Other Questions Related To Structural Square Tubing?

Introduction

This frequently asked questions document is intended to answer general questions about Structural Square tubing applications, production processing, advantages, sizes, specifications, standards, finishing, related services and more.

For more clarifications or in case your question is not covered in this guide, please, contact us:

Steel profile pipe

Q1: What Is Structural Square Tubing?

Structural Square Tubing is a high-strength structural steel profile, its square-shaped configuration and composition allow sufficient rigidity and greater strength. It is almost used in all buildings, infrastructure construction and structural engineering applications.

Structural square tubing is highly versatile and can be produced to support the highest structural stresses and withstand extreme pressure, temperature and destructive elements.

It’s mainly formed from coils; and different alloys such as aluminum, titanium, manganese and tungsten.

Q2: What Are The Applications Of Structural Square Tubing?

Structural Square Tubing can be designed and manufactured for all construction, industrial and commercial structural steel applications, ranging from small trailer beds to large and complex steel structural supports for bridges and skyscrapers.

Structural square tubing is available in a wide range of grades, standards, sizes and wall thicknesses. They are ideal for numerous applications:

Construction infrastructure and engineering industry:

Bridges, roads, tunnels, airports, railroads, buildings, signposts, underwater platforms, Columns, Buildings, Towers, Signs, etc…

Architecturally exposed structural steel (AESS), iconic structures and structural aesthetic focused buildings.

Structural Supports for highway signs, traffic Signals, luminaries, lighting support structures.

Steel profile pipe for Structural Square Tubing

Automobile Industry:

Structural fabrications for Automotive Racks, Carports, Truck Frames, Bases, Trailer beds, Rail Cars.

Machinery & Heavy Equipment:

Machine Bases, Frames, Racks, Spacers, other general machined applications and welding.

Equipment manufacturing:

Cranes, Frames, Construction Equipment – Excavators, Bulldozers, Steam Rollers, etc…

Agriculture:

Cranes, Structural Framing, Greenhouse Structures, Agricultural Equipment, Combines, Sprayers, Tractors, etc…

Oil & Gas:

Structural Construction of Oil Platform, Offshore Platform, Offshore Drilling Rig, Off-Shore, Production Equipment, Tooling Racks.

Energy sector:

Power Plants construction, Solar Brackets, Bases and Solar Racking.

Stack of square stainless steel structural square tubing

Q3: What is the production process for Structural Square Tubing?

The overall process of structural square tubing production involves converting  Low-carbon steel through a production line into a flat steel plate which gradually will be changed in shape to become square. Structural square tubing is then examined and adjusted according to the required weld parameters using:

Integrated roller systems.

Modern mill edge-forming systems.

Electric resistance welding.

Drawn over mandrel (DOM).

Electric resistance welding (ERW).

High-frequency welding machine.

The final process includes cleaning, pickling, heat treatment, cutting, coating with protective galvanizing, zinc or oil to prevent rusting.

The structural square tubing production process may vary depending on customers’ needed specifications.

A series of quality-controlled processes are carried to ensure the end structural square tubing meets exceeds customers’ expectations.

Q4: What Are The Dimensions / Sizes Of Structural Square Tubing?

Structural square tubing is available in many standard sizes, and can be custom-made according to project special dimensions.

Standard structural square tubing sizes:

ASTM A500 in Grade A, Grade B, Grade C, Grade D.

• Size: 2″ x 2″ to 12″ x 12″.

• Wall Thickness: 120″, 180″, 188″, 250″, 313″, 375″, 500″.

• Lengths: 20′, 24′, 40′, 48′.

Structural Square Tubing from 0.500″ to 16.000″ with Wall Thickness 0.065″ to 0.625″.

1/2” square up to 16” square in 20’, 24’, 40’, and 48’ lengths, Wall thicknesses from 16 ga to 5/8”.

Structural Square Tubing of 3/4″ with Length: 20′ and Wall thicknesses 14 ga.

JIS G3466; Grade: STKR 400; STKR 490; Square Size 19x19mm-100x100mm;

Wall Thickness 0.5mm-2.2mm

Custom cut to size service.

Custom lengths service.

Metal pipes or tubes Structural Square Tubing

Q5: What Are The Lengths Of Structural Square Tubing?

Structural square tubing Lengths range from 2 feet to 24 feet (2ft, 4ft. 6ft, 8ft, 12ft, 24ft).

Galvanized Square Tubing is available in 20 and 24-foot lengths.

Custom cut to size and Custom lengths service can be provided.

Q6: What Are the Grades Of Structural Square Tubing?

ASTM A500 Grade A, Grade B, Grade C, Grade D.

A500B FR, A500B HSS, A500B REDKOTE, A500C HSS.

ASTM A501 is a hot-formed version of A500.

ASTM 513 is the standard specification for electric-resistance-welded carbon and alloy steel mechanical tubing.

A1085 HSS.

JIS G3466, the Japanese standard for Carbon steel structural square tubing.

JIS G3466; STKR400; STKR490 Carbon Steel structural Square tubing.

BS EN 10025; S275JR; S355JO.

A847 (weathering steel),

A1065 (up to 50-inch sq made with SAW process).

Stainless steel square Structural Square Tubing

Q7: What Are the Structural Square Tubing Finishing Types?

Red Primed.

Galvanization.

Dark Blue.

Dark Gray.

Black.

Smooth slight oil coating.
Slightly grainy.

Dry.

Q8: What Type Of Structural Square Tubing Ends Do You Offer?

• Plain

• Plastic Caps.

• Steel Rings.

• Beveled.

• Thread with Couplings.

• As per the client’s request.

Metal profile Structural Square Tubing

Q9: Can Structural Square Tubing Be Galvanized?

No matter how large or small is your requirements; the right Galvanized Structural Square Tubing can be produced in different sizes, lengths and wall thicknesses including hard-to-find profiles.

To meet clients’ needs, we offer Galvanized Structural Square Tubing with great corrosion resistance.

• Electrogalvanization:  this process is applied using electroplating, a layer of saline/zinc and zinc anode solution to protect structural square tubing against corrosion.

Our electro-galvanized structural square tubing provides high-performance conversion coating and more brightness and aesthetically appealing colour options.

• Hot-dip galvanized structural square tubing:  this process involves applying a metallic coating that contains protective molten hot zinc to structural square tubing steel to prevent the material from rusting.

Q10: What Are The Advantages Of Galvanized Structural Square Tubing?

Galvanized structural tubing provides a number of advantages:

• It offers superb corrosion resistance, reliable and strong metallurgical performance to structural square tubing.

• Long-term investment (more than 50 years structural square tubing life expectancy).

• Provides resilient resistance and protection from mechanical damage during erection and service.

• It covers structural square tubing external and internal parts, so, complete protection to all surface parts is provided.

• It speeds up the construction process being delivered ready for installation.

• Powdercoating and paint can be applied easily.

• Maintenance-free and Lowest long-term cost.

Set of metallic construction materials. Round pipes, square tubes, corners, rods Structural Square Tubing

Q11: What Are The Types Of Structural Square Tubing?

Hot Rolled Steel

Hot rolled steel structural square tubing manufacturing involves rolling the steel at more than 1,000°F temperatures, this process makes the steel easier to shape and form into a structural square tubing. It is more used for applications that do not require tight tolerances. and precise shapes.

Cold Rolled Steel

Cold rolled structural square tubing processing includes rolling steel at room temperature, below its recrystallization temperature for the objective to offers more shape,  surface finish and dimensions flexibility, increases steel strength, decrease the level of ductility and improve steel mechanical properties.

Carbon Steel

Carbon steel structural square tubing is commonly used for any industry fabrication and structural applications. It offers high-quality weldability, good mechanical properties, easy to be welded, drilled and bolted.

Galvanized Structural Square Tubing

Hot-dip galvanizing and cold galvanizing structural square tubing is mainly used for infrastructure construction such as bridges, rail due to its corrosion protection performance. Galvanization’s main function is to protect the underlying structural square tubing from corrosion which weakens and shortens structure lifespan and offers extended durability in the most challenging environments.

Stainless Steel Structural Square Tubing

Stainless steel structural square tubing is ideal for structural applications where extreme pressure is not involved, such as architectural aesthetics, mechanical equipment, and static structures.

Stainless steel structural square tubing is available in a diverse range of sizes and alloys.

Sizes: 1/2″ x 1/2″ – 12″ x 12″.

Grades: 304; 316.

Standards: ASTM A554.

Wall thickness: 035″ – 500″

Metal profile structural square tubing

Red Oxide Primed Structural Square Tubing

Red Oxide Primed Structural Square Tubing provides excellent steel protection from corrosion, rust and offers water-resistance. It can be produced in a number of different sizes, lengths and wall thicknesses.

Aluminum Structural Square Tubing

Aluminium structural square tubing is used when light-weight and corrosion resistance are important. It provides excellent corrosion resistance, strength-to-weight ratios, lightweight and more outstanding benefits. It has good formability and can be simply machinable and anodized.

6061 aluminum alloy, 6063 aluminum alloy structural square tubing are the most commonly used grade.

Aluminum structural square tubing is widely used as a principal component in structural engineering applications, boating, truck, bike bodies, frames and machined parts.

Q12: What Type Of Corrosion / Rust Protection Can Be Applied To Structural Square Tubing?

Structural square tubing protection and resistance to corrosion can be performed using corrosion engineering and Protective Coating Systems methods such as:

Primers

Primers are zinc-rich coating, it ensures better adhesion of paint to the total surface of structural square tubing and makes it more durable and extremely rust- inhibiting. It is highly recommended to protect structural square tubing against corrosion and oxidation, under-rusting at mechanical breaks, due to its rust-inhibiting, anti-corrosive and metallic anodic corrodes elements such as Zinc phosphate and sacrificial zinc.

Primer quality relies on the high chemical resistance properties and adhesion.

abstract of square metal structural square tubing

The undercoats

Undercoats are mainly used to build a thicker film covering the steel surface by applying several coats, it enhances the overall protection of structural square tubing when is highly pigmented. It improves structural square tubing tensile strength and avoids moisture penetration in coastal and humid atmospheres.

Metallic coatings

Metallic coatings (Metallizing) are applied to structural square tubing mainly for corrosion control being effective for passive and active corrosion protection. Its efficiency depends largely on the choice of coating metal and its thickness. It offers a shiny, glossy appearance and protection from oxidation and sunlight.

It can be applied using two methods:

Hot-dip galvanizing

Hot-dip galvanization is the most robust commonly used technique to prevent rusting and corroding, in which structural square tubing parts are immersed into a bath of molten hot zinc to alloy the overall structural square tubing surface and form a zinc-iron alloy layer through a metallurgical reaction between the zinc and steel.

Electroplating such as chromate conversion coating can be applied to provide more surface passivation to the structural square tubing substrate material.

3-2 Thermal /Metal Spraying

Thermal spraying (aka metal spraying) is a coating technology that improves structural square tubing surface. The coating process involves spraying pure zinc or aluminum layers to structural square tubing parts.

abstract of square metal structural square tubing

Cathodic protection

All Cited protective coatings types are 100% effective when used in combination with cathodic protection or galvanic corrosion.

Cathodic protection is a method used to control the corrosion of structural square tubing metal surface using electrochemical cell action through sacrificial metal which acts as the anode, and provides the required electrical current to control corrosion in structural square tubing.

Q13: What Coating Types Can Be Applied To Structural Square Tubing?

Blue, Red, Black (Prime coating).

Organic zinc-rich primer

In-organic zinc silicate paint

Zinc metal spray coatings.

Silver (Electro-galvanised)

Blast Coating.

No oil, paint or coating option.

Other types of coating can be applied according to clients’ requirements.

Please note that structural square tubing coating result depends largely to surface cleaning prior to applying any coating type.

stack of square metal structural square tubing

Q14: What Are The Specifications Of Structural Square Tubing?

Structural square tubing standard specifications are recognized by the ASTM for cold-formed welded and seamless carbon structural steel tubing in square shapes. This is a standard set by the standards organization ASTM International,

ASTM A500 is the standards specification set by ASTM International for structural square tubing or SHS (square hollow sections) made of cold-formed welded and seamless carbon.

ASTM A500 defines four grades of carbon steel based primarily on material strength:

Low-carbon steel

Medium-carbon steel

High-carbon steel

Ultra-high-carbon steel

Structural square tubing adhere also to ASTM A1085 which is a higher strength standard than A500, being manufactured with tighter wall thicknesses, and offers increased efficiency

for building seismic and fatigue support requirements for towers, drilling Platforms, etc…

Structural Square Tubing is produced also in accordance with the European EN 10210 standard.

Q15: What Are the Standards Of Your Structural Square Tubing?

• ASTM A500.

• GB China steel grades.

• JIS Japanese Industrial Standards.

• DIN Germany steel-grades

• EN European standards.

• BS.

• Other

stack of square metal structural square tubing

Q16: What Are The Structural Square Tubing Related Services?

A wide variety of structural square tubing related services is offered to meet clients exact requirements including:

• Cut To Size / Measures, Saw Cutting.

• Advanced cuts can be made based on CAD designs or detailed drawings.

• Tube laser cutting.

• High precision laser structural square tubing cutting, Hi-def plasma, waterjet.

• Hole punching, threading, grooving and notching

• Custom-made, special size.

• In-Stock structural square tubing.

• SameDay or next-day delivery (depending on order size).

• And more value-added services can be provided.

Q17: What Is The Minimum Order Quantity For Structural Square Tubing?

There is no minimum order quantity or amount, customers can order small or big quantities.

Minimum order might be set for customized and nonstandard structural square tubing.

Q18: Is Structural Square Tubing Complies With Local and International Building Codes?

International Building Code and Local Building code rules are strictly followed to facilitate obtaining the planning permission. The main objective is to protect public health and safety.

profile pipe structural square tubing

Q19: Does Structural Square Tubing Made In China Complies With Local And International Building Code and Regulations?

Yes, absolutely. Structural square tubing manufactured in China fully complies with International Building Code (IBC/IRC), all Local Building codes, structural and mechanical properties requirements set to obtain the planning permission. The manufacturer ensures structural square tubing conformity to the construction structures local code requirements in terms of:

Health and Safety concerns.

Fire code rules.

Earthquake, seismic code resistance requirements.

Specifications on structural square tubing properties.

ANSI-established policies and standards.

Q20: What Are The Structural Square Tubing Warranties Offered?

Structural square tubing is covered by the following warranties:

1year rust through warranty.

1year warranty against failure of the structural square tubing.

1year warranty against significant ripping and/or discoloration.

Free defects in materials:  1 Year under normal use and operations.

Free defects in workmanship:   1  Year under normal use and operations.

Steel Profiles structural square tubing

Q21: Does Manufacturer Provide Structural Square Tubing Test Certificates / Reports?

Yes. Test Certificates (TC’s) and Letters of Compliance (LOC’s) are provided by the manufacturer for customers upon their request. Mill test report (MTC), Structural square tubing materials test report (MTR), along with chemical, mechanical and physical properties analysis are offered also to enable compliance verification.

Q22: How To Buy Structural Square Tubing From China’s Best Manufacturers?

China’s best structural square tubing Manufacturers serve largely overseas steel markets. A large selection of cost-efficient structural square tubing is available in different standards, grades, special sizes and custom-made options.

China’s structural square tubing market offers a large variety of carbon steel structural square tubing as well as galvanized, stainless, aluminum and more.

China’s Best Manufacturers offers the most outstanding structural square tubing at a highly competitive freight rate. China’s best structural square tubing manufacturers source the Worlds users of structural square tubing, either in Europe, the United States Of America, Canada, Australia, New Zealand, the Middle East, Asia, Africa, and the rest of the World.

For any structural square tubing requirement, please reach out to us for a free consultation.

Q23: How To Ship Structural Square Tubing From China?

You can ship your entire structural square tubing requirements from China. A wide variety of standard or custom shapes, diameters, and lengths are available to meet your project application.

Structural square tubing is mostly shipped by sea freight Transport, or by intermodal freight transport.

Flexible shipment terms and incoterm are applicable

Structural Square Tubing orders are shipped worldwide from China, according to The American Institute of Steel Construction Inc. (AISC) standards:

– Electronic Advance ship notice

– Standard Specification for Bar Coded Shipment Label.

– Structural square tubing test report information.

–  Mill test report data for structural square tubing.

China’s Structural Square Tubing Shipping cost

Best shipping rates are given to international customers through multiple international shipping companies. Shipping cost is quoted based on the weight and dimensions of the structural square tubing you order.

For more details contact us now: info@sunnyda-house.com

Steel profile pipe structural square tubing

Q24: Why Choose Sunnyda’s Structural Square Tubing?

Whether you are looking for high-strength, cost-effective structural square tubing, in standard size or customized, for megaproject construction, wholesale or just a small quantity. Wherever you are in the World Sunnyda can cover your entire structural square tubing requirements on-time.

One-Stop Structural Square Tubing Solutions Provider:

Sunnyda is your one-stop solution provider; we offer worldwide clients the broadest selection of quality structural square tubing in all design, dimensional tolerances and welding.

With over  100,000 square feet of manufacturing and warehouse space dedicated to structural square tubing production. We successfully maintained the industry’s largest stock of structural square tubing, at the most competitive price, and unmatched value-added services.

We offer carbon steel structural square tubing, stainless steel square tubing, aluminum and more.

Tested and Certified Structural Square Tubing:

CE Marking: sunnyda’s offers structural square tubing that conforms to the European Economic Area (EEA) health, safety, and environmental protection steel standards.

ISO 9001:2015 Quality Management Systems Standard.

ISO 14001:2015  Environmental Management system standard.

Mill Test Certificate (MTC)

Structural square tubing painted with a red color for protection the corrosion from rust.

High performance

At Sunnyda, we design and manufacture bespoke structural square tubing that suits any project performance and aesthetics requirements. We are committed to offering you the strongest structural square tubing with the following characteristics:

• Versatile due to its strength and durability.

• Excellent weldability and machinability.

• Can be cold worked.

• Aesthetically pleasing.

• Easy to bend, form, and drill.

Custom-made Structural Square Tubing:

Sunnyda’s in-house specialists can customize structural square tubing to any size, strength, shape and response to OEM (original equipment manufacturer) requirements.

Q25: Are You The Main Manufacturer Or A Trading Company?

Sunnyda is the main manufacturer; you can rely on us to get your structural square tubing done right, at the most economical price.

Q26: Do You Export Structural Square Tubing Worldwide?

Yes, we ship anywhere in the World via common carriers.  We process, pack and handle all Export orders at our factory.

With structural square tubing in stock, customers’ orders can be processed quickly.

We process, pack and handle the Certificate of origin and all Export documentation to ship the orders.

Steel profile pipe structural square tubing

Q27: Do You Keep Structural Square Tubing In Stock?

Yes, structural square tubing stock is available in our stores for immediate or next-day delivery along with advanced cutting options.

Q28: Do You Accept Third Party Inspection For Structural Square Tubing?

Yes, we accept third party inspection from an organization such as

Q29: When Can I get Structural Square Tubing Order Delivered?

To keep your project running on time, we can fulfill your structural square tubing standard size requirements offering the following fast delivery options:

• Same-day or next-day delivery.

• 3-5 days standard delivery.

• 10-25 days for Custom-made structural square tubing.

• Or as per order’s quantity.

Stack of structural square tubing in the industry

Q30: Where Are You Located? Can I Visit Your Head Office / Warehouse to see Structural Square Tubing?

Sunnyda is located at No 29, Huahui Road, Songjiang District, Shanghai, China.

Check our Maps are here.

Our factory and warehouse are open hours:

9 am to 6 pm, Monday to Friday.

8  am to 12 pm on Saturday.

Q31: I Placed A Structural Square Tubing Order, Can You update Me about My Order Status?

Kindly, we are here to serve you better, just provide us with your order number, we will reach out as soon as we can to you via email with the required updates. Contact us now.

Q32: Do You Provide Pre-sales And After-Sales Customer Service for Structural Square Tubing?

Our customer services team is on call 24/7 – to respond to all of your inquiries. We provide assistance from order start to delivery and after-sales service.

Q33: What Payment Methods and Terms Do You Accept For Structural Square Tubing Purchases?

Payment  50 % in advance and  50 % balance before shipment by:

T/T (Telegraphic Transfer).

L/C (Letter of Credit).

VISA, MasterCard, Discover, American Express, or other acceptable payment methods.

Q34: I have Other Questions Related To Structural Square Tubing?

We will be happy to answer your questions. Contact us now!