Hebei Zhonghai Steel Pipe Manufacturing Corporation (China Zhonghai Group) was etablished in the year 1997. We are specialized in seamless pipe,Casing pipe,welded pipe, spiral pipes and galvanized steel pipe, Anti-Corrosion coating steel pipe. We have have do export business for more than 16 years. our product as follows:DIAMEER: seamless pipe 1/4"---40"(13.7mm--1020mm) Casing pipe 1"----20" (60.3mm-- 508mm) welded pipe 1"---80" (33.4mm--2020mm)<...
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