China manufacture Best price weld big diameter square steel hollow section

Welding pipes is one of the simplest and most durable ways to join piping together and steel pipes can simply be welded together with MIG (metal inert gas), TIG (tungsten inert gas or SMAW (stick metal arc) welding.

Product Details Company Profile

Description

Quick Details

Standard: ASTM, BS, DIN, GB, ANSI A210-1996, ASTM A106-2006, BS 1387, BS EN10025, BS EN10219, DIN EN 10208-1-1998, GB 18248-2000
Grade: 10#-45#, A53-A369, Q195-Q345, 10#, 20#, 45#, A53(A,B), Q195, Q215, Q235, Q345
Thickness: 0.5 - 25 mm
Section Shape: Square
Outer Diameter: 10mm*10mm-600mm*600mm
Place of Origin: Tianjin, China (Mainland)
Secondary Or Not: Non-secondary
Application: Structure Pipe
Technique: Hot Rolled
Certification: CE
Surface Treatment: oiled, black painted or hot dip galvanized
Special Pipe: EMT Pipe
Alloy Or Not: Non-alloy
Product name: weld big diameter square steel hollow section
Shape: Square. Rectangular
Length: 1-12m or customer's requestment
place of origin: Tianjin. Tangshan, China
Color: Silver, black
Usage: Construction Structure
Surface: painted or customers't Requirement
Materail: Low carbon steel
Delivery time: Within 7-20 Days about square tube
Packing: Bundles or as your requestments about square tube

Packaging & Delivery

Packaging Details	About packing 1. Package: weld big diameter square steel hollow section 2. Loading: if 20ft: not more than 25mt and the length is not more than 5.8m. if 40 ft: not more than 27mt. 3.about the mark: could no mark on the body or mark as your order.
Delivery Time	Shipped in 25 days after payment

Product Description

What is welded square steel pipe?

Welding pipes is one of the simplest and most durable ways to join piping together and steel pipes can simply be welded together with MIG (metal inert gas), TIG (tungsten inert gas or SMAW (stick metal arc) welding. Before welding two pipes together, avoid any gaps between the two pipes. While welding, take measures to ensure the continual alignment of the two pipes.


OD mm	WT mm	OD mm	WT mm	OD mm	WT mm	OD mm	WT mm	OD mm	WT mm
20x20	1.0-3.0	130x30	2.5-12	20x30	1.0-3.0	50x80	1.5-6.0	100x150	2.5-12
25x25	1.0-3.0	140x140	2.5-12	20x40	1.0-3.0	50x90	1.5-6.0	100x200	2.5-12
30x30	1.0-3.0	150x150	2.5-12	25x40	1.0-3.0	50x100	1.5-6.0	100x250	2.5-12
40x40	1.0-5.0	160x160	2.5-12	30x40	1.0-3.0	50x120	1.5-6.0	100x300	2.5-12
50x50	1.0-5.0	180x180	2.5-12	30x50	1.0-3.0	60x80	1.5-6.0	100x400	2.5-12
60x60	1.0-5.0	200x200	3.0-12	30x60	1.0-3.0	60x90	1.5-6.0	150x200	2.5-12
70x70	1.0-5.0	220x220	3.5-12	40x50	1.0-3.0	60x100	1.5-6.0	150x250	3.0-12
80x80	1.0-5.0	250x250	4.0-12	40x60	1.0-3.0	60x120	1.5-6.0	150x300	3.0-12
90x90	1.0-6.0	300x300	1.5-12	40x80	1.0-3.0	75x125	1.5-6.0	200x300	4.5-12
100x100	1.0-6.0	400x400	6.0-12	40x100	1.0-6.0	80x100	1.5-6.0	200x400	4.5-12
120x120	1.0-6.0	500x500	6.0-12	50x70	1.0-6.0	80x120	1.5-6.0	300x400	4.5-12

Material list

Elements	Chemical Composition%					Mechanical Property
Material	C%	Mn%	S%	P%	Si%	Yield Point	Tensile Strength	Elongation
						(Mpa)	(Mpa)	(%)
Q195	0.06-0.12	0.25-0.50	<0.05	<0.045	<0.3	>195	315-430	32-33
Q235	0.12-0.2	0.30-0.70	<0.045	<0.045	<0.3	>235	375-500	24-26
Q345	<0.20	1.0-1.6	<0.04	<0.04	<0.55	>345	470-630	21-22