Q235 Square Steel Tube Hollow Section Black Carbon Steel

• Type: Square
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Square Tube
• Technique: Welded
• Shape: Square
• Surface Treatment: Black
• Model NO.: Square Steel-01
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tube
• Outer Diameter: 6mm--1250mm or According to Customer′s Requirement
• Thickness: 0.25mm--50mm or According to Customer′s Requiremen
• Surface Structure: Black Paint, Varnish, Oil, Galvanized, Anti-Corros
• Quality: Approved by SGS,ISO
• Transport Package: Standard Seaworthy Packing
• Specification: 6-1250mm*1-50m
• Trademark: Youcheng
• Origin: Tianjin
• HS Code: 7306690000
• Production Capacity: 500000

Product Description

 

Product Description

Product Description

Product name	Carbon Steel Square Tube
Standrad	ASTM A 500 Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
	BS EN 10219-2 :2006  Cold formed welded structural hollow sections finegrain steels
Steel Grade	S235, S235JR, S235 G2H, S275, S275JR, S355JRH ,S355J2H,  St33, St37, St44, ST52, JIS G3444 STK290,STK400,STK500,STK490,STK540,
Steel Material	Q195 → SS330,ST37,ST42 Q235 → SS400,S235JR Q345 → S355JR,SS500,ST52
Specification	Wall Thickness:0.5mm -28mm Outer Dia: 5*5 mm-1000*1000mm Length: 1-12m, customized
Technical treatment	1)  Black,Pre-galvanized 2)  oiled,powder coating 3)  Galvanized as your requirement PS:Pre galvanized steel pipe: 60-150g/m2;Hot dipped galvanized steel pipe: 200-400g/m2
MOQ	1 Ton
Usage	1) Low Pressure Liquid, Water, Gas, Oil, Line Pipe 2) Construction , Structure 3) Agriculture fence post , door pipe
Place of Origin	China (Mainland)
Port of Loading	TIANJIN, GUANGZHOU, NIINGBO, SHANGHAI or as required
Terms of Delivery	FOB, CFR, CIF, CNF
Packing	Standard export sea-worthy packing
Delivery time	Within 7-15 days after recieve 30% desipot or as your requirement
Stock	Ready in stocks

Size Chart

Square and Rectangular Steel Pipe Size Chart
Square Hollow Section	Rectangular Hollow Section	Thickness
20*20 25*25 30*30	20*40 30*40	1.2-3.0
40*40 50*50	30*50 25*50 30*60 40*60	1.2-4.75
60*60	50*70 40*80	1.2-5.75
70*70 80*80 75*75 90*90 100*100	60*80 50*80 100*40 120*80	1.5-5.75
120*120 140*140 150*150	160*80 100*150 140*80 100*180 200*100	2.5-10.0
160*160 180*180 200*200	200*150 250*150	3.5-12.0
250*250 300*300 400*200 350*350 350*300	250*200 300*200 350*200 350*250 450*250 400*300 500*200	4.5-15.75
400*400 280*280 450*300 450*200	400*350 400*250 500*250 500*300 400*600	5.0-20.0

Processes

 
Square tubes is a form of tube type, people have a different name on it, called the rectangular tubes, rectangular tubes, square tubes, welded square tube, because it has a lot of kinds of material of material can make the tube body, usually square tube is formed after unpacking, kaiping, bending strip welding pipe, again by the mechanism of rolling into a square tube.


  Galvanized square steel pipe, rectangular steel pipe, steel hollow section, divided according to the shape of the section, is a name for square pipe and rectangular pipe. It is made of strip steel that has been processed and rolled. Generally, the strip is unpacked, flattened, coiled, welded to form a round tube, and then rolled into a square tube from the round tube and then cut to the required length. Square rectangular tube is also called cold-formed hollow section steel, referred to as square tube and rectangular tube.
 

Detailed Photos

Product Test

Square and Rectangular Steel Pipe Surface:

1) Natural Black;
2) Oiled with pvc wrapped;
3) Color painted on natural black steel pipe;
4) Color painted on Galvanized steel pipe;
5) 3PE coated on natural black steel pipe;
6) 3PE coated on Galvanized steel pipe;
7) Pre galvanized zinc coating 30g/m2 or customized (30g/m2 -100g/m2)
8) Hot dip galvanized zinc coating 200g/m2 or customized (200g/m2 - 500g/m2)

Packaging & Shipping

Carbon Steel Square Tube Packing Details

a) Packing: standard seaworthy export wooden pallets,water proof paper, pvc film, interleaving paper,in 20' or 40' container or as per customers' requirements.
b) Delivery: products in stock can be prepare within 3 days after receiving deposit.
  products as your order can be finished within 15 days under 500 tons.