• Wuxi Jinlai Mechanical Processing Co., Ltd.
    John Fairbank
    stainless steel strip with good quality and the Sales clerk service is very good.i like this company i hope can work with your again
  • Wuxi Jinlai Mechanical Processing Co., Ltd.
    Shipment speed is very fast, and the requirements can meet me. Salesman is very responsible.
  • Wuxi Jinlai Mechanical Processing Co., Ltd.
    Fierce Urchin
    good ,the galvanized steel coil quality is good and i donot see the broken on them.that is nice
Contact Person : Jo Yuan
Phone Number : +86-18706170710
WhatsApp : +8618706170710

Well Formed Carbon Steel Square Tube Straight Body Smooth Welded Line Customized

Place of Origin: CHINA
Brand Name: JIN LAI
Certification: ISO
Model Number: ASTM A36 1020 1045 Q235ETC
Minimum Order Quantity: 3 tons
Price: negotiable based on the quantity
Packaging Details: standard seaport packing or as customers' requirement
Delivery Time: within 15 days after received the advance
Payment Terms: T/T, Western Union, L/C
Supply Ability: 3000 tons per month
Product Details
Standard: ASTM GB JIS DIN Grade: 10#, 20#, 45#, A213, A192, A178-C, A209, A200, A199, A214,
Shape: Square OD: 30*30mm-1000*1000mm
Surface: Galvanized, Oiled, Black Painted Application: Construction Structure
Tolerance: ±5% Length: 6-12m
High Light:

carbon steel tubing


carbon seamless pipe

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Product Description

Black Carbon Steel Square Pipe Welded Steel Pipe


The square pipe material is generally plain carbon steel square pipe and low alloy square pipe.General carbon steel is divided into: Q195, Q215, Q235, SS400, 20# steel, 45# steel, etc


ASTM A36 square tube is one of the commonly used hot rolled and mild steel. It is having very good welding properties and is suitable for machining, grinding, drilling, tapping and punching processes. Jin lai a legally certified industry is engaged in offering a very good quality of ASTM A36 Square Tube that can easily be used for fulfilling the demands of various applications. Here in this industry, a buyer will easily get high quality of tubes is assuring in having various good features to offer.


In the industry, during the time of production, the superior quality of raw material is effectively used. The industry is having professional and expert team members that are taking care of the better production of tubes. Also, the quality control team is taking care and in working efficiently in order to maintain the product quality. Furthermore, the use of latest technology and modern tools are considered so better quality of product making can be guaranteed.


There are many good qualities that are making the ASTM A36 square Tubing high in demand. It is the high tensile strength, rugged construction, corrosion resistance, high durability, flexibility, sturdiness, easy to fit, longevity, withstanding heavy loads and high-temperature atmosphere. Additionally, other attributes like stress corrosion cracking resistance, general corrosion resistance, crevice corrosion resistance and anti-corrosive are offered.


There several effective tests are conducted in order to bring out the very good quality of the product. The testing is positive material identification test, intergranular corrosion test, pitting resistance test, hardness test, chemical analysis, mechanical test, radiography test, hydrostatic test. More test like eddy current test, flattening test, flaring test, ultrasonic test, macro test, micro test is performed.

The product is packed using wooden crates/pallets/boxes, carton boxes to assure safer and damage free shipping to farther distances.

Quick Details


Product Type EN-10025-2 Grade ASTM A36 square Tube
Specification OD15*15mm-400*400mm
OD 15*15-400*400mm, WT0.8-12.0mm
Diameter 0.250″ thru 3″
Wall Thickness 0.8~12.0mm
Standard GB, BS, ASTM
Steel material Q195. Q215, Q235, Q345
Surface Treatment Bared, Black Painted (varnish coating), Galvanized, With Oiled, 3 PE, FBE, corrosion resistant coating
Section Shape Square and rectangular

Bundle, In Bulk, Bags square galvanised steel hollow section tube, Clients’ Requirements


A36 steel can have ultimate tensile strengths from 58,000 to 79,800 psi. The exact ultimate tensile strength is determined by a variety of factors such as chemical composition and forming method. A36 is relatively ductile and can elongate to around 20% of its original length when tensile testing. Its ductility and strength also give it excellent impact strength at room temperature.



Mechanical Properties Imperial Metric
Ultimate Tensile Strength 58,000 – 79,800 psi 400 – 550 MPa
Yield Tensile Strength 36,300 psi 250 MPa
Elongation at Break (in 200 mm) 20.0% 20.0%
Elongation at Break (in 50 mm) 23.0% 23.0%
Modulus of Elasticity 29,000 ksi 200 GPa
Bulk Modulus (Typical for steel) 20,300 ksi 140 GPa
Poissons Ratio 0.260 0.260
Shear Modulus 11,500 ksi 79.3 GPa


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Well Formed Carbon Steel Square Tube Straight Body Smooth Welded Line Customized 0
Packing and deliverary
Well Formed Carbon Steel Square Tube Straight Body Smooth Welded Line Customized 1
If you have any question, please feel free to contact us any time.