Marine engineering

ASTM A209 / A209M, ASME SA209 T1, T1a, T1b is the standard applicable to seamless carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes.

GB/T 18248 seamless gas cylinder tube is a kind of seamless steel tube for gas cylinders.

A335 P91 alloy steel pipe is a high-performance, high-temperature and corrosion-resistant alloy steel pipe, which is widely used in petroleum, chemical industry, electric power and other fields.

The production process of DIN 1629 steel pipe supplied by GNEE includes heating of pipe billet, piercing, three-roller cross rolling or continuous rolling, tube stripping, sizing (or reducing), cooling, straightening, hydrostatic test (or flaw detection), marking and warehousing.