- Cangzhou Botop International Co., Ltd
- China Manufacturer with main products:steel pipe
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- ASTM A335 Grade P91 Seamless Alloy Steel Pipe
- ASTM A335 Grade P91 Seamless Alloy Steel Pipe
- API 5L X52 or L360 LSAW Welded Steel Pipe Specifications
- ASTM A53 Gr.A &Gr. B Carbon ERW Steel Pipe for high Temperature
- ASTM A556 Cold Drawn Seamless Carbon Steel Feedwater Heater Tubes
- Carbon Seamless Steel Pipe ASTM A53/A106 Gr.B
- Carbon Seamless Steel Pipe ASTM A53/A106 Gr.B
- EN10219 S355J0H LSAW(JCOE) Steel Pipe Pile
- API 5L X42-X80/ API 5L X52 / PSL1&PSL2 Oil and Gas Carbon Seamless Steel Pipe
- ASTM A192 Boiler Carbon Steel Tubes For High Pressure
