... SPEC 5CT \5DUsage:Oil pipeline, pipe materials collar, Oil natural gas , industrial gas, water, oil transportationH40\J55\K55\ ... G3455ASTM A213JIS G3456Oil pipeline, pipe materials collar, Oil natural gas , industrial gas, water, oil transportationOil Chemical power ... tobacco size locomotiverefining plants, heat exchanger pipe Pipeline seamless pipeFertilizer equipment pipelinePressure pipe for ship, ...