20*20/30*30/40*40/50*50 /60*60 Black Square Square Tube with Lowest Price

• Type: Welded
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Square
• Transport Package: Seaworthy
• Specification: 10mm- 500mm
• Origin: China, Shandong
• HS Code: 7304900000
• Production Capacity: 1000ton

Product Description

Size	OD	20*20-500*500MM
	Wall Thickness	0.6 mm-15mm
	Length	1-12M
Standard	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
Zinc Weight	40g,60g,80g,100g,120g,270g,400g,500g,550g
	7μm ,8μm, 15μm ,20μm ,40μm ,60μm,70μm,80μm
Usage	1)Low Pressure Liquid, Water, Gas, Oil, Line Pipe
	2)Construction , Structure
	3)Agriculture fence post , door pipe

COLD ROLLED BLACK ANNEALED STEEL TUBE
ROUND PIPE		SQUARE PIPE		RECTANGULAR TUBE		OVAL TUBE
SIZE(mm)	thickness(mm)	SIZE(mm)	THICKNESS(mm)	size(mm)	thickness(mm)	size(mm)	thickness(mm)
14	0.6-1.0	12*12	0.6-1.0	10*20	0.6-1.2	15*30	0.6-1.5
16	0.6-1.4	15*15	0.6-1.2	12.5*25	0.6-1.3	20*40	0.6-1.8
19	0.6-1.5	16*16	0.6-1.3	13*26	0.6-1.5	19*49	0.6-1.8
20	0.6-1.5	18*18	0.6-1.3	13*38	0.6-1.5	20*50	0.6-1.8
22	0.6-1.5	19*19	0.6-1.5	15*30	0.6-1.5	25*50	0.6-1.8
25	0.6-1.8	20*20	0.6-1.5	16*36	0.6-1.5	30*60	0.7-1.8
25.4	0.6-1.8	22*22	0.6-1.5	17*37	0.6-1.5	L / T / Z SHAPE TUBE
28	0.6-1.8	23*23	0.6-1.5	17*42	0.6-1.5	SIZE	THICKNESS
28.6	0.7-1.8	24*24	0.6-1.5	19*38	0.6-1.5	28L/T/Z	0.7-1.5
30	0.7-1.8	25*25	0.6-1.5	20*30	0.6-1.5	38L/T/Z	0.7-1.5
32	0.7-1.8	28*28	0.6-1.5	20*40	0.6-1.5	34L/T/Z	0.7-1.5
34	0.7-1.8	30*30	0.6-1.5	20*50	0.6-1.5	42/L/T/Z	0.7-1.5
35	0.7-1.8	32*32	0.6-1.5	30*40	0.6-1.5	Contact :jasonwang@lgtgsteel   Phone: [phone]
38	0.7-1.8	35*35	0.6-1.5	25*40	0.6-1.5
40	0.7-1.8	36*36	0.6-1.5	25*50	0.6-1.5
42	0.7-1.8	37*37	0.6-1.5	27*40	0.6-1.5
45	0.7-1.8	38*38	0.6-1.5	30*50	0.7-1.5
48	0.7-1.8	40*40	0.6-1.5	30*60	0.7-1.5
50	0.7-1.8	47*47	0.7-1.5	40*60	0.7-1.5
58	0.8-1.8	50*50	0.8-1.8	40*80	0.8-1.5
60	0.8-1.8	60*60	0.8-1.8	25*38	0.6-1.5
63.5	0.8-1.8
75	0.8-1.8

Q1. Where is your factory ?
A1: Our company's processing center is located in liaocheng, shandong, China.
Which is well equipped with kinds of machines, such as laser cutting machine,mirror polishing machine and so on.
We can provide a wide range of personalized services according to the customers' needs.
Q2. What are your company's main products ?
A2: Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, channel, etc.
Q3. How do you control quality ?
A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.
Q4. What are the advantages of your company ?
A4: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless
steel companies.
Q5. Can you provide sample ?
A5: Small samples in store and can provide the samples for free.
Customized samples will take about 5-7days.