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This is livian from HeBei zhonghai steel pipe manufacturing corporation (china zhonghai Group)

I find your address from google.com .

We are specialized in seamless pipe, our product as follows:
DIAMETER:               3"---40"
WALL THICKNESS:   SCH10---SCH160
USAGE:                     Applicable to transport liquid, gas, oil etc.
Steel Grade:                API 5L: Gr.B X42 X46 X52 X60

                                 GB/T 8163:10# 20# 35# 45# 16MN(Q345B)
                                 GB 3087:10# 20# 35# 45# 16MN(Q345B)
                                 GB 5310:20G 12Cr1MoV  12Cr1MoG  12CrMoG
                                 ASTM A106/53:Gr.A Gr.B Gr.C
                                 DIN 1629: St 37.0  St 44.0 St 52.0
                                 DIN 17175: St35.8 St45.8 17Mn4 17Mn5 15Mn5 15Mo3 13CrMo910           
                              
Welcome your inquiry and we'll give you the best price, good quality, and the excellent service.
Your immediate reply would be highly appreciated.