Tangshan Lianchuang Steel Making Science & Technology Co., Ltd., Covering an area of 164, 000 square meters, is a comprehensive enterprise of steel deep-processing integrating ratio-frequency welded pipe, galvanized pipe, cold-rolled sheet and galvanized coil, with the annual yield capacity of 2,000, 000 tons of welded pipe, 450, 000 tons of galvanized pipe ranging from15mm*15mm/10mm*20mm-300mm*300mm/200mm*400mm, and 80, 000 tons of cold-rolled sheet with 620mm-150mm in width, 3.0mm-0.3mm in thickness. 

30mmx30mm Black Square Steel Pipe for Structure Building

1. Size: 15mmx15mm/20mmx10mm-300x300mm/200mmx400mm
2. Material: Carbon steel
3. Factory price
4. Do small order

1) Thickness :      0.5-20mm 2) Size(dia.):          10mm*20mm/15mm*15mm-200mm*400mm/300mm*300mm 3) material :           Q195 Q235 Q215 Q345 St37  ASTM A500 4) Certifications  : ISO9001-2000, API-5L 5) Standard:      ASTM BS GB API
Length	2m-12m ,by customer's requirements
Standards	GB/T6728-2002,GB/T6725-2002, GBT3094-2000,JG 178-2005, ASTM A500 JIS G3466,EN10210
Materials	Q195,Q215,Q235,Q345  St37 St52 St42 St35
Product Category	Metallurgy, Mineral & Energy
Technique	Welded,ERW Cold Rolled,Hot Rolled
Surface	Bared, Galvanized, Oiled,Or Other Anti-corrosive Treatment.  We can produce other specifications according to customers requirements.
Packing	1.Big OD:in bulk             2.Small OD:packed by steel strips           3. 20"GP:5.85*2.2*2.2 40"GP:11.85*2.2*2.2 Black steel pipe: oiled/painted, in bundles and tarpaulin outside             According to the requirements of customers
Inspection	With Chemical Composition and Mechanical Properties Analysis;  Hydrostatic Test, Dimensional and Visual Inspection, Also With Nondestructive Inspection
Usage/Application	Mechanical & manufacture, Steel structure, Shipbuilding, Bridging ,Automobile chassis Industrial water lines/plant piping, Vehicular chassis and frames, Idlers & belt conveyorsAgriculture and Irrigation, Scaffoldings, Electrical Cable conduits, Cooling towers, Antenna and Telecom Towers, Cold storages,  Tabular polesFire Protection Systems, HVAC, Plumbing,Fabrication industry,  Food Processing, Pharmaceutical, Petrochemical, Chemical, Machine Building, Automobile.
Main market	North America     South America   Eastern Europe  Southeast Asia Africa  Oceania   Mid East   Eastern Asia   Western Europe Central America   Northern Europe   Southern Europe South Asia   Domestic Market
Country of origin	China
Productivity	1,500,000Metric Tons per Month
Delivery Detail:	15-20days after receive the prepayment or L/C

Normal dimension of steel pipe
Black Steel Pipe
(Square)SHS			(Rectangular)RHS
(Out dia.)mm	(Wall thickness)mm		(Out dia.)mm		(Wall thickness)mm
15*15	0.8-2.5		20*30		0.8-2.75
20*20	0.8-2.75		20*40		0.8-2.75
25*25	0.8-2.75		30*40		0.8-3.0
30*30	0.8-3.0		25*50		0.8-3.0
38*38	0.8-4.0		30*50		0.8-4.0
40*40	0.8-4.0		30*60		0.8-4.0
50*50	0.8-5.0		40*60		0.8-5.0
60*60	0.8-5.0		40*80		0.8-5.0
70*70	1.3-5.0		50*70		0.8-5.0
80*80	1.5-5.0		60*80		1.3-5.0
100*100	1.5-12.0		50*100		1.3-6.0
120*120	1.6-12.0		60*100		1.3-6.0
130*130	2.0-12.0		60*120		1.6-6.0
140*140	2.0-12.0		80*100		1.6-6.0
150*150	2.0-12.0		80*120		1.6-12.0
160*160	2.0-12.0		80*140		2.0-12.0
180*180	2.0-12.0		80*160		2.0-12.0
200*200	2.0-12.0		100*150		2.0-12.0
250*250	3.5-12.0		100*200		2.0-12.0
300*300	3.5-12.0		150*250		3.0-12.0
			100*300		3.0-12.0
			200*300		3.0-12.0
			200*400		3.0-12.0
Hot Dipped Galvanized Steel Pipe
(Square)SHS			(Rectangular)RHS
(Out dia.)mm	(Wall thickness)mm		(Out dia.)mm		(Wall thickness)mm
15*15	0.82-2.52		20*30		0.82-2.77
20*20	0.82-2.77		20*40		0.82-2.77
25*25	0.82-2.77		30*40		0.82-3.02
30*30	0.82-3.02		25*50		0.82-3.02
38*38	0.82-4.02		30*50		0.82-4.02
40*40	0.82-4.02		30*60		0.82-4.02
50*50	0.82-5.02		40*60		0.82-5.02
60*60	0.82-5.02		40*80		0.82-5.02
70*70	1.32-5.02		50*70		0.82-5.02
80*80	1.52-5.02		60*80		1.32-5.02
100*100	1.52-12.02		50*100		1.32-6.02
120*120	1.62-12.02		60*100		1.32-6.02
130*130	2.02-12.02		60*120		1.62-6.02
140*140	2.02-12.02		80*100		1.62-6.02
150*150	2.02-12.02		80*120		1.62-12.02
160*160	2.02-12.02		80*140		2.02-12.02
180*180	2.02-12.02		80*160		2.02-12.02
200*200	2.02-12.02		100*150		2.02-12.02
			100*200		2.02-12.02
			150*250		2.02-12.02
Pre-Galvanized Steel Pipe
(Square)SHS			(Rectangular)RHS
(Out dia.)mm	(Wall thickness)mm		(Out dia.)mm		(Wall thickness)mm
15*15	0.7-2.0		20*30		0.7-2.0
20*20	0.7-2.0		20*40		0.7-2.0
25*25	0.7-2.0		25*50		0.7-2.0
30*30	0.7-2.0		30*40		0.7-2.0
38*38	0.7-2.0		30*50		0.7-2.0
40*40	0.7-2.0		40*60		0.7-2.0
50*50	0.7-2.0		40*80		0.7-2.0
60*60	0.7-2.0		37*57		0.7-2.0
80*80	0.7-2.0		27*47		0.7-2.0
100*100	0.7-2.0		37*77		0.7-2.0
			50*100		0.7-2.0

 
1.High quanlity and reasonable price.
2. Customized on-demand.
3. Reasonable shipping and fast delivery.
4.Free sample.
If you have any question,please contact us!
We will reply you within 24 hours.
In order to make best quotation, Please kindly indicate length, width, thickness and the standard, material you required.

TANGSHAN LIANCHUANG STEEL MAKING SCIENCE & TECHNOLOGY CO., LTD
Add: LUAN COUNTY,EQUIPMENT MANUFACTURING INDUSTRIAL PARK,TANGSHAN CITY,HEBEI PROVINCE,CHINA
Tel: +86-18833353021  Fax:+86-315-7410603