Our company produced coupling including sucker rod coupling,sub-coupling and spray coupling, they are design according to API Spec 11 B standard.Using the high quality carbon steel or alloy steel (the equivalent of AISI 1045 and AISI 4135) and plating metal is a kind of surface hardening...
API 5L P.S.L.2 have restrictions with the carbon equivalent content, where for the carbon mass fraction greater than 0.12%, and equal or less than 0.12%. Different CEQ shall be applied. For line pipe in P.S.L2 tensile stren...
IMO MSC 265 Guidelines for the approval of sprinkler systems equivalent to that referred to in solas regulation II-2/12 IMO MSC 848 Guidelines for the approval of equivalent fixed gas fire-extinguishing systems, as referred to in solas 74, for machinery spaces and cargo pump-rooms IMO MSC 913...
Equivalent results were obtained in the presence of zwitterionic lipid vesicles (Fig. S3B and C), implying that peptide-membrane interactions did not promote any structural changes under these conditions. As the lipid vesicle concentration increased, structural definition also increased in the helical ...