We Zhonghai steel pipe manufacturing corporation 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 *6 years. our product as follows:
DIAMEER:         

            seamless pipe 1/4"****0"(*3.7mm*****0mm)                     

            Casing pipe 1"*****0" (*0.3mm*- **8mm)                  

            welded pipe   1"****0"  (*3.4mm*****0mm)                     

            Spiral pipe    8"*****0" (**9mm*****0mm)
WALL THICKNESS:     SCH****-SCH**0(1.*4mm***0mm)
USAGE:               Applicable to transport liquid, gas, oil etc.
Steel Grade:         API 5L: Gr.B X*2 X*6 X*2 X*6 X*0.                      

                     ASTM A**6/*3:Gr.A Gr.B Gr.C                      

                     APL 5CT:J*5 K*5 N*0 L*0 C*0 T*5 P**0 

                     GB/T ***3:*0# *0# *5# *6MN(Q**5)                     

                     GB ***7:*0# *0# *5# *5# *6MN(Q**5B)
                     GB ***0:*0G *2Cr1MoV  *2Cr1MoG  *2CrMoG
                     DIN ***9: St *7.0  St *4.0 St *2.0
                     DIN ****5: St*5.8 St*5.8 *7Mn4 *7Mn5 *5Mn5 *5Mo3 *3CrMo**0 

                      EN****0:S**5JO S**5JR S**5JR       and so on...    

Welcome your inquiry and looking forward to starting business relations with you soon.
Livanpipe(at)yahoo(doc)cn***- contact livian