We can supply all kinds of steel pipes ; tubes, such as (1) seamless steel pipe: material 20#, 45#, 16mn; specification diameter57mm-630mm. (2) high-frequency welded pipe: material q235a;b; specification dia 15mm- 159mm. (3) galvanized pipe: material q235a;b; specification dia 15mm-80mm. (4) cast iron pipe: material is spherulitic graphite cast iron, 18#, 22# pig iron. We can supply kinds of steel pipes according to your material and specification We are paid member of alibaba.Com, tradekey etc for 7 years.Our company was founded in 1998, we have lots of regular clients in india, pakistanm, iran, australia, indonesia and others, they all satisfied with our quality and service Pls send your enquiry to asyingyi24(at)163(dot)com for which we thank you Then we will quote you our best price soon In bulk