Beijing Zhonggangda Manufacturing Company

This? is?? Crystal from? Beijing? ZhongGangDa? International? Trade? Co.,LTD,? Our? company? is? one? of? the? largest? professional? manufacturers? of? seamless? steel? pipe? in? China.?
The? main? products? are? all? kinds? of? specification? of? pipes,? such? as? ERW? steel? pipes,? carbon? steel? pipes,? welded? steel? pipes,seamless? steel? pipes,? galvanized? pipes,hex? nuts? and? pipe? fittings? in? ASTM,? API? 5L? and? European? Standard.
All? are? produced? according? to? standard? API5L? or? API5CT.? The? annual? production? capacity? is? 300,000? tons.
If? you? are? interested? in? our? products,please? feel? free? to? contact? us.? We? are? looking? forward? your? reply.? We? will? provide? you? the? best? price? and? quality.