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

• Type: Welded
• Technique: ERW
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Construction & Decoration
• Section Shape: Square
• Transport Package: PVC Packing
• Specification: 12*12mm-500*500mm
• Origin: Tianjin
• Production Capacity: 200000 Tons /Year

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 :Miss Anna Wang   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

Surface Treatment
1) Color Painted (Black / Red / Varnish coating)
2) Galvanized
3) Oiled
4) As Clients' Requirements



PACKAGE & DELIVERY 
1) PVC Packing 
2) By Container 
3) By Bulk Vessel 
4) As Client's requirements



QUALITY CONTROL 

1)Before Shipping ,Our professional Inspectors Will Check The Pipe's Diameter ,Thickness ,Length, Chemical Composition, Mechanical Properties,Zinc Coating  etc, Everything is Ok, Then Will Shipping and Supply a MTC With Full Information .
2) Support The Third Party Inspection ,SGS, BV and Others.




FACTORY PROFILE 

Tianjin Jinxinbao Mental Surface Treatment Co.,LTD .We were founded in 2012, with the headquarters location at the largest welded pipe production based in china-Yangjiayuan Town,Tianjin city,which is the most professional manufactuer of steel products in this area. There have total 6 galvanized production lines ,about 200 employees and annual production more than 200000 tons .

In the 2016, in order to meet client requirements, we built a after-processing factory, whose named is Tianjin Baojing New Energy Technology Co.,LTD , which produced all kinds of customized products and sucessful supply for many PV projects .

As the export's window, Tianjin Shengteng Internatinal Trading Co.,LTD , manily exporting the factory's galvanized steel products, especially galvanized steel pipe ,square and rectangular steel tube, seamless steel pipe ,ERW steel pipe, galvanized steel coil/sheets ,scaffolding steel props, PV mounting system .

In the past ,we get good feedback from old clients, and we will more fouce on the quality and improve the service to thankful each client in the future.



FAQ

1)How manys days can you delivery after confriming order ?
If we have stock ,we can shipping within 5-7 days . If customized ,usually within 30 days with normal size . Specially sizes need to confirm with factory.

2) What is your payment?
1. 30%TT deposit, 70% balance against with BL copy . 
2. 100% LC at sight /45 days or 60 days LC 

3)What is the product's warranty ?
As long as you received our cargo within 1 years, you have any problem ,pls feedback to us .After cnofirming our quality cause ,we will resend new pipes or give reasonable compensation for you.

4) Can I have a trail order ?
Of course ,we are gald to make a trail order to show our quality and service . Getting your satification ,we can try more cooperation .

5) Can I have a vist ?
 Welcome your visiting ,we can communicate and exchange market information to develop more business.


CONTACT INFORMATION 

Sale Manager : Miss Anna Wang