product description:
| Standard | Grade |
| API 5L PSL1 | A,B,X42,X52,X56,X60,X65,X70,X80 |
| ASTM A53/ASTM SA53 ASTM A106/ASTM SA106 | A,B,C |
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Different from other factories：
1.we applied for received 3 patents .(Groove pipe ,Shoulder pipe,Victaulic pipe ) 2. Port : our factory just 40 kilometers from Xingang port ,is biggest port in the north of China . 3.Our manufacturing equipment include 4 pre-galvanized products lines,8 ERW steel pipe product lines,3 hot-dipped galvanized process lines.Produce products :
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