Shinestar Steel Pipe Corporation specialized in exporting and manufacturing of steel pipes since 1993. Our products are : 1. Oil and Gas Transmission Pipe: OD: 10.3mm - 1016mm with wall thickness: 1.7mm - 52mm API 5L line pipe, water, oil and gas pipeline, etc 2. OCTG Products: OD: 60.3mm - 508mm with wall thickness: 4.24mm - 16.13mm API 5CT casing & tubing, API 5DP drilling pipe, etc 3. Pipes for Pressure Use: OD: 6mm - 720mm with wall thickness: 1mm - 120mm ASTM A106/A53 pipe, boiler tube,pipe for heat exchanger and high temperature, etc 4. Machining Tube and Others: OD: 6mm - 1200mm with wall thickness: 1mm - 200mm ASTM A519, DIN2391, DIN 1629, EN 10025 and etc. Pls do not hesitate to ask me if you have any questions. I would like to answer you sincerely. Looking forward to hearing from you.~