Gold Member Since 2013
Audited Supplier
Tianjin Sangong International Trade Co., Ltd.

Mild Steel, Ms Square Pipe, Square Hollow manufacturer / supplier in China, offering China Manuafcturer Black Carbon Steel Hollow Section, Eoe TFS 214, Pre Gi Square Pipe and Rectangular Tube and so on.

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Supplier Homepage Product black sqaure and rectangular pipe China Manuafcturer Black Carbon Steel Hollow Section

China Manuafcturer Black Carbon Steel Hollow Section

Purchase Qty.:
1-9 10+
FOB Unit Price: US $510 US $430
Purchase Qty. (Tons) FOB Unit Price
1-9 US $510
10+ US $430
Get Latest Price
Port: Tianjin, China
Production Capacity: 8000, 000 Tons/Year
Payment Terms: L/C, T/T, D/P, Western Union, Money Gram

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Basic Info
  • Model NO.: SG5
  • Technique: ERW
  • Surface Treatment: Galvanized
  • Zinc Coating: 80-200G/M2 of Ms Black Square Tube
  • Size: 12*12-600*600mm of Ms Black Square Tube
  • Annual Output: 800000tons
  • Place of Origin: Tianjin, China
  • Sample: for Free of Ms Black Square Tube
  • Transport Package: Packed by Steel Strips
  • Origin: Tianjin, China
  • Type: Welded
  • Material: Q235, Q345 of Ms Black Square Tube
  • Section Shape: Square
  • Thickness: 0.5-25mm of Ms Black Square Tube
  • Lenght: 2-12m of Ms Black Square Tube
  • Grade: BS 1387, En1029, Astma53
  • Company Type: Factory, Manufacturer
  • Trademark: BAOLIJIN
  • Specification: SGS
  • HS Code: 7306610000
Product Description
1. Specifications: mild steel Black Square Tube and Pipe
Thickness: 0.5-12mm
Size(dia. ): 15*15--400*400mm, 10*20-300*500mm
Material: Q195 Q235
Certifactions: BV SGS
2. mild steel Black Square Tube and Pipe application: Construction material, curtain wall, traffic, Fluid pipe, structure pipe, gas pipe, hydraulic pipe, oil pipe, drill pipe, boiler pipe
3. Pictures show of mild steel Black Square Tube and Pipe

Company introduction
We tianjin Baolijin Pipe production Co., Ltd is an attached subcompany of Sangong Group. The group has 7 subcompanies and is specialized in manufacturing galvanized square pipe, rectangular pipes, angel steel, channel steel, H Sections, steel flat, round bar steel, rotary blade for farm and garden, Highway fence, light pole and traffic signs bar
Sangong group:
1). 9 rotary blade production lines
2). 30 steel pipe production lines
3). 10 galvanized production lines
4). 4 welded steel pipe production lines
5)5 light pole production lines etc.
We adopting the advanced manufacturing technique and provide high quality products to the customers all over the world. Assure our customers of the delivery time

1) Thickness :      0.5-30mm
2) Size(dia.):          15*15--600*600mm

3) material :           Q195 Q235 Q215 Q345 St37 #10 #20 #45 ASTM 53/106
4) Certifications  : ISO9001-2000, API-5L

5) Standard:      ASTM BS GB API


 2m-12m ,by customer's requirements

International Standard

 ISO 9001-2008,SGS


 ASTM A53  BSEN10219  GB/T3094 JIS G3466 BS EN10210 GB/T6728 BS1387


 Q195,Q215,Q235,Q345 #10 #20  #45 St37 St52 St42 St35 API155

Product Category

 Metallurgy, Mineral & Energy


 Welded,ERW Cold Rolled,Hot Rolled


 Bared, Galvanized, Oiled,Or Other Anti-corrosive Treatment.

 We can produce other specifications according to customers requirements.

Zinc Coating




galvanized: in bundles

          1.Big OD:in bulk  

          2.Small OD:packed by steel strips  

          3.By woven cloth with 7 slats  

          4. 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 




With Chemical Composition and Mechanical Properties Analysis; 

Hydrostatic Test, Dimensional and Visual Inspection, Also With Nondestructive Inspection




Mechanical & manufacture, Steel structure, Shipbuilding, Bridging ,Automobile chassis

Water Pipelines, Waste waterlines , Water supply mainsDeep tube wells casing pipes, 

Gas/Natural gas pipe lines, Oil pipe lines, LPG & other nontoxic gas pipelinesIndustrial Purposes, Sewerage system, 

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



5000 Metric Tons per Month

Delivery Detail:

15-20days after receive the prepayment or L/C

T/L: 0086-18822620963
FAX: 0086-22-23707982
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