ZG is invested by Zhejiang Jindun Holding Group Co., Ltd with an annual production of 250000 tons and a fixed asset of USD 200 million. As one of the largest manufacutures of seamless steel tubes&pipes in China or even throughout the world, ZG covers an area of 160, 000 square meters with a factory area of 130000 squre meters and has a workforce of more than 600 including over 200 professional technicians senior engineers, senior non-destructive testing staffs. ZG is competent in producing high-quality seamless pipes with diameter 390~1200mm, wall thickness 16~200mm and length 4~12 meters that are mainly used in energy fields of nuclear and thermal power stations, petroleum and petrochemical industry, high-pressure gas cylinder, military industry, mechanical sructure and so on. Our stainless seamless steel tubes are the advanced productions in China. Our main production series are listed as follows: 1. Pipes for Power Generation and Petrochemical Industry use. OD: up to ~1200 mm WT: up to ~200 mm Length: 4~12.5 m Typical Grade: ASTM/ASME A106B, A106C, P11�¯�¼ï¿½P12�¯�¼ï¿½P22�¯�¼ï¿½P91, EN WB36, P235GH, ST45.8, 10CrMo910 and so on 2. Line Pipes OD: up to 48 " WT: up to 4 " Application: onshore and offshore transmission of oil, gas, water and other fluids. Typical Grade: API 5L Grade B up to API 5L X80 (including nace) Pipe ends: plain or beveled ends 3. Seamless Pipes for High Pressure Cylinders series of size: 406; 426;457;508;559; 610; 660 and so on Typical Standard: ASTM A519, ASTM SA372, ISO11120 Typical grade: 4130X, 4140, 34CrMo4, 42CrMo4, 34Mn2V, 30CrMo and so on. Application: material for high or middle pressure gas cylinders 4. Stainless Pipes OD: up to 1050mm WT: up to 120mm Application: for the chemical industrial fields of oil, gas and coal, the thermal and nuclear pwer industry and the manufactural industry such as military equipment and ship-building Main standards: ASME/ASTM A312, ASME/ASTM A213, ASME/ASTM A789, ASME/ASTM A269, JIS G3459, DIN17458 Typical Grade: TP304H/L, TP316/H, TP347/H, TP321/H and so on. 5. Pipes for Mechanical Structure and Low Temperature use OD: 350~1420mm WT: 20mm~300mm Application: for mechanical parts such as hydraulic stanchion, hydraulic barrel and other large equipments�¢ï¿½ï¿½ parts. Standard: EN10210/EN10297/EN10216/DIN1629/ASTM A333/ASTM A519/ASTM A53/ASTM A106 and so on