Specification: MSS SP-40
Class: #150 - #900
Range: 12 Inch to 60 Inch
Origin: Europe, South Korea, Japan, South Africa, China, India

Specification: ASME B16.36
Class: #300 - #2500
Range: 1 Inch to 24 Inch
Origin: Europe, South Korea, Japan, South Africa, China, India

Specification: BS 3293
Class: #150 - #600
Range: 26 Inch to 48 Inch
Origin: Europe, South Korea, Japan, South Africa, China, India

Specification: API 605, ASME 16.47 Series A & B
Class: All available class
Range: All available ranges
Origin: Europe, South Korea, Japan, South Africa, China, India

Specification: API 590, ASME B16.48
Class: All available class
Range: All available ranges
Origin: Europe, South Korea, Japan, South Africa, China, India

Specification: API 6A
Class: All available class
Range: All available ranges
Origin: Europe, South Korea, Japan, South Africa, China, India