ASTM A252 Spiral Steel pipes as piles from China Borun steel
ASTM A252 is the standard specification for welded and seamless steel pipe piles.
And it contains GR1, GR2, GR3 grades.
This specification covers nominal wall cylindrical steel pipe piles in which the steel cylinder acts as a permanent load-carrying member or as a shell to form cast-in-place concrete piles. Each welded pile shall be made by seamless, electric resistance welding, flash welding or fusion welding with longitudinal, helical-butt, or helical-lap seams. This specification also deals with material tensile requirements, minimum elongation values and common size and weights per unit length values.
Specification & Details:
1 Outside Diameter: 219.1 mm - 2540mm (8"-100")
2 Wall Thickness: 6mm - 25.4mm Length: 6- 22 m
3 Standard: API 5L, API 5CT, GB/T9711.1, SY5037-2000
4 Steel Material: Q235A, Q235B, Q345, ASTM A53/106, API 5L GR.A/B, L245 L290 X42 X46 X70 X80, S355, S275 etc.
6 Surface Treatment:
External Coating:
| Type |
Standard |
| Single-Layer FBE Coating |
SY/T 0315-2005, CAN/CSA Z245.20-2010,
DEP 31.40.30.32-Gen-2011, ISO 21809-2-2007, API RP 5L9-2001 |
| Double-Layer FBE Coating |
Q/CNPC 38-2002, CAN/CSA Z245.20-2010 |
| 2LPE/2LPP Coating |
SY/T 0413-2002, GB/T 23257-2009, ISO 21809-1-2009 |
| 3LPE/3LPP Coating |
SY/T 0413-2002, GB/T 23257-2009, DIN 30670-1991, CAN/CSA Z245.21-2010,
ISO 21809-1-2009, NF A49-711-1992, NF A49-710-1988 |
| Insulation Coating |
SY/T 0415-1996, CJ/T 114-2000, EN 253-1994 |
Internal Coating
Single-Layer FBE Coating
Standard: API RP 5L2-2002, DEP 31.40.30.35-Gen-2005
7 Usage: Used for low pressure fluid delivery, such as water, gas, and oil; construction and piling, chemical industry, power plant, offshore platform etc.
8 Test: Chemical Component Analysis, Mechanical Properties (ultimate tensile strength, yield strength, percentage elongation), Technical Properties (flattening test, bending test, blow test, impact test, exterior size inspection, hydrostatic test, X-ray test)
9 Loading Port: mainly Tianjin port
10 Mill Test Certificate: as per standard
11 Payment Terms: TT, LC
12 Mini Order: 20tons for carbon steel, 30-50tons for low alloy steel
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ASTM A252 Spiral Steel pipes as piles from China High Booming steel Images
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