Seamless steel pipes:
1. ASTM A53 GR. B steel grade: SA53 B
Specification: Out-diameter 13.7-711.2mm Thickness 2.2-38.9mm

2. ASTM A106 GR. B steel grade: SA106B               Specification: Out-diameter 13.7-711.2mm Thickness 2.2-38.9mm

3. API SPEC 5L steel grade: B X42 X46 X52              Specification: Out-diameter 13.7-711.2mm Thickness 2.2-38.9mm