Galvanized Seamless Steel Pipe(Round,Square,Rectangle)
Standard: GB/T 3091-2008, EN10296/10297,ASTM A500,etc.
Steel material: Q235, Q195, 20#, 45#, SS400, Gr.B.
Outer diameter: 20mm~406mm
Wall thickness: 1mm~10mm
Length: 6meters, 7meters, 9meteters, 12meters, or by random.
Type: seamless, welded
Thickness of Zinc coating: 200g~300g for BS standard, 500g~550g for ASTM standard,
Or according to buyer's requirement.
Type of pipe: Round pipe, Square tube, rectangle tube. Seamless and welded.
Prime quality of our GI pipe
Main size of our round galvanized seamless steel tube
| Outer diameter (mm) | Wall thickness (mm) | Length (meters) |
| 1/2'' | 21.3 | 0.6~3.0 | 0.3m~12m |
| 3/4'' | 26.7 | 0.6~3.0 | 0.3m~12m |
| 1'' | 33.4 | 1.0~3.0 | 0.3m~12m |
| 1-1/4'' | 42.3 | 1.0~4.0 | 0.3m~12m |
| 1-1/2'' | 48.3 | 1.0~4.0 | 0.3m~12m |
| 2'' | 60.3 | 1.5~4.0 | 0.3m~12m |
| 2-1/2'' | 76.1 | 1.5~4.0 | 0.3m~12m |
| 3'' | 88.9 | 1.5~9.5 | 0.3m~12m |
| 4'' | 114.3 | 2.0~9.5 | 0.3m~12m |
| 5'' | 141.3 | 3.0~9.5 | 1m~12m |
| 6'' | 168.3 | 3.0~12.0 | 1m~12m |
| 8'' | 219.1 | 3.2~12.0 | 1m~12m |
| 10'' | 273 | 3.2~12.0 | 1m~12m |
| 12'' | 323.8 | 6.0~15.0 | 1m~12m |
| 14'' | 355.6 | 8.0~15.0 | 1m~12m |
| 16'' | 406.4 | 8.0~20.0 | 1m~12m |
Normal size of square/rectangle galvanized seamless steel tube
| Square tube(mm) | Rectangle tube (mm) |
| 16×16×0.4~1.5 | 380×380×8.0~14.0 | 10×20×0.6~1.5 | 250×150×6~12.0 |
| 18×18×0.4~1.5 | 400×400×8.0~14.0 | 14×21×0.6~1.5 | 250×100×6~12.0 |
| 20×20×0.4~1.5 | 420×420×10.0~14.0 | 15×30×1.5~1.5 | 250×200×6~12.0 |
| 25×25×0.6~2.0 | 450×450×10.0~14.0 | 15×38×0.6~1.5 | 300×150×6~12.0 |
| 30×30×0.6~4.0 | 480×480×10.0~14.0 | 20×30×0.6~2.0 | 300×200×6~12.0 |
| 34×34×1.0~2.0 | 500×500×10.0~14.0 | 20×40×0.8~2.0 | 300×250×6~12.0 |
| 35×35×1.0~4.0 |
| 20×50×1.0~2.0 | 400×250×8~12.0 |
| 38×38×1.0~4.0 | 550×550×10.0~40.0 | 22×35×0.9~2.0 | 400×300×8~12.0 |
| 40×40×1.0~4.5 | 600×600×10.0~40.0 | 25×40×0.9~3.75 | 450×200×8~12.0 |
| 44×44×1.0~4.5 | 700×700×10.0~40.0 | 25×65×1.0~2.0 | 450×250×8~12.0 |
| 45×45×1.0~5.0 | 800×800×10.0~50.0 | 30×40×1.0~3.75 | 400×300×8~12.0 |
| 50×50×1.0~5.0 | 900×900×10.0~50.0 | 30×45×1.0~3.75 | 400×350×8~12.0 |
| 60×60×1.5~5.0 | 1000×1000×10.0~50.0 | 30×50×1.0~4.0 | 500×200×10~12.0 |
| 70×70×2.0~6.0 |
| 30×60×1.0~4.5 | 500×250×10~12.0 |
| 75×75×2.0~6.0 |
| 40×50×1.0~4.5 | 500×300×10~12.0 |
| 80×80×2.0~6.0 |
| 40×60×1.0~5.0 | 500×350×10~12.0 |
| 85×85×2.0~6.0 |
| 40×80×1.5~5.0 | 500×400×10~12.0 |
| 95×95×2.0~8.0 |
| 40×100×2.0~5.0 | 500×450×10~12.0 |
| 100×100×2.0~8.0 |
| 50×60×2.0~5.0 |
|
| 120×120×4.0~8.0 |
| 50×80×2.0~5.0 | 600×200×10~28.0 |
| 150×150×6.0~10.0 |
| 50×100×2.0~8.0 | 600×400×10~28.0 |
| 180×180×6.0~12.0 |
| 60×80×2.0~6.0 | 600×500×10~28.0 |
| 200×200×6.0~12.0 |
| 80×100×2.0~8.0 | 800×400×10~28.0 |
| 220×220×6.0~14.0 |
| 120×60×2.5~10.0 | 800×600×10~28.0 |
| 250×250×6.0~14.0 |
| 120×80×2.5~10.0 | 800×700×10~28.0 |
| 280×280×6.0~14.0 |
| 150×100×2.5~12.0 | 1000×400×10~28.0 |
| 300×300×8.0~14.0 |
| 180×150×2.5~12.0 | 1000×500×10~28.0 |
| 320×320×8.0~14.0 |
| 200×100×4~12.0 | 1000×600×10~28.0 |
| 350×350×8.0~14.0 |
| 200×150×4~12.0 | 1000×800×10~28 |
Our service
Make production according to customer's specific requirements strictly.
Accept inspection during the production or before shipment.
Provide the original copy of MTC(Mill testing certificate)
Provide the standard seaworthy packing.
Arrange the most professional shipment.
Qingdao Ironsteel International Trading Co., Ltd. is a professional manufacturer/supplier of different kinds of seamless steel tube(seamless steel pipe), stainless steel pipe and PVC/PE pipe in north of China.
As manufacturer, we are running one seamless steel tube(seamless steel pipe)factory, one PVC/PE pipe factory, take share of one stainless steel pipe factory.
As trader, we are dealing with every kind of pipe products, including steel pipe and PVC pipe.
Now our company newly invested a aluminium veneer factory, so we can also supply different specifications of aluminium veneer for construction industry.
Our quality products are enjoying very good sales on international market, we have long terms customers in Southeast Asia, Middle East, South Asia, Latin America, Africa Russia and so on. We are enjoying very good reputation among our customers.
Our Pipes have been used in many national large-scale key projects, such as CNPC, CSIC, South-to-North Water Diversion, West-East Gas Transmission, Henan Luoyang Xiaolangdi, Beijing-Shanghai high-speed railway, etc.
Our leading products are as follows:
1. Seamless steel tube(seamless steel pipe)
1). Cold drawn seamless steel pipe(high precision size with tolerance+/-0.1mm), like material 20#, 20Cr, 45#, which are widely used for mechanical making.
2). Hot rolling seamless steel pipe, including:
ASTM A106/A53 Gr. B carbon pipe;
API 5L series line pipe;
Alloy pipe (High pressure and temperature boiler pipe) like A335 P9~P91, 15CrMo, 20G 4130X by ASTM A519, etc;
2. Stainless steel pipe(seamless and welded) by material 316L, 316, 304L, 304, 301, 321 etc.
3. PVC pipe for water supply, PVC drainage pipe, PE pipe
4. Aluminium veneer.
5. ERW/SSAW welded steel pipe by ASTM, API standard, material contains grade Q195, Q235, Q345B, X45~X60.
6. Square/rectangle steel pipe(seamless and welded) by ASTM standard and JIS standard.
7. Galvanized steel pipe (seamless&welded).
8. Stocked Secondary quality steel pipe (with very low price)
According to customer's requirements, we can provide every kind of certifications(like API, ISO, IBR, SGS), to make sure the quality of our pipes, we can do every kind of supervision(during production, before shipment). Customers can also arrange any kind of inspection before shipment.
We make the most standard seaworthy packing. Our pipe will be wrapped, wooden cased, customers can receive the pipe in very beautiful condition.
To do the foreign trade business, we keep the idea of Honest and Customer First, sincerely hope to establish business relation with professional pipe buyer from different countries.
