1. The precision cold-drawn seamless steel pipe materials E235N (St37.4) and E355N (St52.4) meet the EN10305-4 (DIN2391) standard
Normalizing, phosphating and oiling inside and out
2. Seamless cold-drawn stainless steel pipe material AISI316L (1.4404) conforms to ASTM A269 standard
Metric sizes are fully annealed, indefinite