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Our company mainly produce large diameter seamless steel pipe as per API standard .And also get the API & CE certificates , all the products will according to the standard .The BV&SGS test can be done as yr requirement. I think u must interest in our products �pls check the details as follows : 1.Seamless pipe Size: 6�- *6�(**8mm***4mm) Standard: GB/API/ASTM/EN/DIN/JIS/GOST Material: A**6B, A*3B, API 5L GR.B, X*2. X*2.X*0.ST*2 , etc. 2.Welded steel pipe Size: 8� - *8� (**9mm ****0mm) Standard: GB/API/ASTM/EN/DIN/JIS/GOST Material: A*3B, API 5L GR.B, X*2.X*2.ST*2 , etc.