• Wuxi ShiLong Steel 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 ShiLong Steel Co.,Ltd.
    Cooperate with a trial order. The service is excellent and the price is very good. Product quality is guaranteed and can stand inspection
  • Wuxi ShiLong Steel 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 : Ava
Phone Number : 0086 17768523827
WhatsApp : +8618706170710

ERW Q345 25mm Mild Steel Square Tube 1 Inch X 1 Inch 2 In X 20 Ft 0.875" X 0.065" SS400

Place of Origin CHINA
Brand Name OEM/ODM
Certification ISO
Model Number ASTM A 572
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

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Product Details
Standard ASTM GB JIS DIN Grade Q345
Shape Square OD 30*30mm-1000*1000mm
Surface Galvanized, Oiled, Black Painted Application Construction Structure
Tolerance ±5% Length 6-12m
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Q345 25mm Mild Steel Square Tube


ERW Mild Steel Square Tube 1 Inch x 1 Inch


1inch ms square pipe

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Product Description

Grade 10#-Black Carbon Steel Square Pipe Welded Steel Pipe


Q345 grade: comprehensive mechanical performance is good, the low temperature performance may also, plasticity and good weldability, used in low pressure vessel, oil tank, vehicles, cranes, mining machinery, power stations, Bridges under moving load of the structure, mechanical parts, building structure, general metal parts, hot rolled or normalizing state, can be used in various structure below 40 ℃ cold areas.
(1). Widely used in Bridges, vehicles, ships, construction, pressure vessels and so on. (2). Suitable for hot rolling, controlled rolling, normalizing, normalizing, tempering and quenching state supply of engineering steel and general structure with thickness not less than 3mm steel plate, steel strip, section steel, steel bar.


ASTM-572 Grade 50
Chemical composition: C=0.45%, Mn=0.75%, P=0.04% max, S=0.05% max
Property Value in metric unit Value in US unit
Density 7.872 *10³ kg/m³ 491.4 lb/ft³
Modulus of elasticity 201 GPa 29100 ksi
Thermal expansion (20 ºC) 11.7*10-6 ºCˉ¹ 6.5*10-6 in/(in* ºF)
Specific heat capacity 486 J/(kg*K) 0.116 BTU/(lb*ºF)
Thermal conductivity 50.9 W/(m*K) 353 BTU*in/(hr*ft²*ºF)
Electric resistivity 1.62*10-7 Ohm*m 1.62*10-5 Ohm*cm
Tensile strength (hot rolled) 565 MPa 81900 psi
Yield strength (hot rolled) 310 MPa 45000 psi
Elongation (hot rolled) 16 % 16 %
Hardness (hot rolled) 84 RB 84 RB
Tensile strength (cold drawn) 625 MPa 90600 psi
Yield strength (cold drawn) 530 MPa 76900 psi
Elongation (cold drawn) 12 % 12 %
Hardness (cold drawn) 88 RB 88 RB
Product show 
ERW Q345 25mm Mild Steel Square Tube 1 Inch X 1 Inch 2 In X 20 Ft 0.875" X 0.065" SS400 0
Packing and deliverary
ERW Q345 25mm Mild Steel Square Tube 1 Inch X 1 Inch 2 In X 20 Ft 0.875" X 0.065" SS400 1
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