ASTM A252 piling welded ssaw spiral steel pipes

Deep foundations are required when the shallow soils are not strong enough to support the loads from the structure. Pipe piles are commonly used in deep foundations and transfer the loads from building to stronger soil layers found deep underground. The loads are resisted through skin friction and point bearing. Pipe can be driven either open-ended or closed-ended, with points or plates. If driven with plates, the pipes can then be filled with concrete to add strength to the pile. Usually the money spent on plates, rebar, and concrete would be better spent on a larger, thicker pile. Pipe piles range in size from several inches to several feet in diameter and can be easily spliced to create piles hundreds of feet in length.

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, EN10025, EN10219, ASTM A252,
4 Steel Material: Q235A, Q235B, Q345, ASTM A53/106, A252A/B/C, API 5L GR.A/B, L245 L290 X42 X46 X70 X80, S355, S275 etc.
6 Surface Treatment:

External Coating:

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

13 Mini Order: 20tons for carbon steel, 30-50tons for low alloy steel