Alloyed engineering steel

Alloyed engineering steel for Oil and Gas

thyssenkrupp	AISI/ASTM/SAE	Download PDF
4130	4130 - API 6 NACE MR 01.75	pdf
4140 H - L 80	4140 H - API 5 NACE MR 01.75	pdf
4145 H Mod.	4145 H Mod. - API 7	pdf