- Nantong Yongda Pipe Industry Co., Ltd.
- China Manufacturer with main products:drill pipe ,heavy weight drill pipe ,API oil pipe ,oil pipe ,special beating tubing thread oil pipe ,API casing pipe ,casing pipe ,special beating tubing thread casing pipe ,API drill pipe ,drill tube ,Steel seamless drill pipe ,5"drill pipe ,G105 drill pipe ,Geological drill pipe ,oil tube ,casing tube ,API 5CT casing pipe ,seamless casing pipe ,API seamless casing pipe ,seamless oil pipe
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