Astm A333 Grade 3 Seamless Pipe

Standard & Grade

• Standard: ASTM A333
• Grade: Grade 3
• Product type: Seamless or welded carbon/alloy steel pipe
• Intended for very low-temperature service

Manufacturing

• Manufactured by seamless or welded process
• No filler metal used in welded construction (as specified)
• Pipes are heat treated to control microstructure

Dimensions

• Outside diameter: 19.05 mm – 114.3 mm
• Wall thickness: 2.0 mm – 14 mm
• Maximum length: 16000 mm

Applications

• Low-temperature and ultra-low-temperature service pipelines
• Seamless and welded steel piping systems

Inspection & Testing

• Chemical composition inspection
• Mechanical tests: tensile strength, yield strength, elongation
• Flaring, flattening, bending, and hardness tests
• Impact testing for low-temperature performance
• Surface and dimensional inspection
• Non-destructive electric testing
• Hydrostatic test

Chemical Composition (%)

• Carbon (max): 0.19
• Manganese: 0.31 – 0.64
• Phosphorus (max): 0.025
• Sulfur (max): 0.025
• Nickel: 3.18 – 3.82
• Silicon, Chromium, Other elements: Not specified

Mechanical Properties

• Yield strength (min): 450 MPa
• Tensile strength (min): 240 MPa
• Elongation (Y-direction, min): 30%
• Elongation (X-direction, min): 20%

Impact Test Temperature

• Lowest impact test temperature: -150 °F / -100 °C

Surface Treatment

• Oil dip
• Varnish
• Passivation
• Phosphating
• Shot blasting

Packing & Marking

• Bare packing, bundle packing, or crate packing
• Wooden protection at both ends of pipes
• Sea-worthy export packing as requested
• Each crate marked with order number, heat number, dimensions, weight, and bundle details