The process of Ssaw steel pipe:
Steel coils→Ray material test → Delivery straightening → Plate cutting and welding → circle shear edge milling → Forming → inside auto-welding → Outside auto-welding → Online ultrasonic inspection → Fixed length cutting → Visual inspection for outside seam → Visusl inspection for inside seam → X-ray inspection for welding seam → Even end and end bevel → Hydrostatic test → Ultrasonic inspection → Final product inspection → Marking → Store up
ASTM A572 standard is for high strength low alloy (HSLA) structural steel plate integrated with columbium-vanadium, the specification covers 5 grades of HSLA steel profiles, plates, sheet piling, and bars.
Applications of A572 Steel Plates:
Grades 42, 50, 55 are intended for riveted, bolted or welded structural, Grade 60 and 65 are for riveted and bolted construction of bridges, welded constructions and more applications.
•A6/A6M: General requirements for rolled structural steel bars, plates, shapes, and sheet piling
•A36/A36M: Carbon structural steel specification
•A514/A514M: Specification for quenched and tempered alloy steel plate with high yiled strength, suitable for welding
•A588/A588M Specification for High-Strength Low-Alloy Structural STeel, up to 50 ksi [245 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance
ASTM A572 Grade 50, 60 & 65 Data Sheet Properties
Chemical properties shall conform to the requirements prescribed in Table 2 and Table 3 for alloy elements. Tensile strength and yiled strength shall comply with Table 4.
Table 3: Alloy elements composition
Table 3: Alloy elements composition
A: Alloy content shall comply with Type 1, 2, 3, or 5 and shall be on test report.
B: Product analysis limits = 0.004 to 0.06%.
C: Product analysis limits = 0.005 to 0.17%.
D: Product analysis limits = 0.01 to 0.16%.
Elongation, % B,C,D
8 in[200 mm]
2 in[200 mm]
A: Specimen shall comply with Specification of A6/A6M.
B: Elongation not required to be determined for floor plate.
C: For wide flange shapes over 426 lb/ft [634 kg/m], elongation in 2 in. [50 mm] of 19% minimum applies.
D: For plates wider than 24 in. [600 mm], the elongation requirement is reduced two percentage points for Grade 42, 50, and 55 [290,345,and 380], and three percentage points for Grade 60 and 65 [415 and 450]. See elongation requirement adjustment in the Tension Tests section of Specification A6/A6M.
General Requirements for Delivery
Structural steel plates furnished under ASTM A572 shall comply with requirements of the current edition of Specification A6/A6M, for the specific structural product ordered, unless a conflict exists in which case this specification shall prevail.
Coils are not applicable to this specification until they are processed to a finished structural product. Structural steel plates produced from coil means they have been cut to individual lengths from a coil. The processor directly controls, or is responsible for, the operations involved in the processing of a coil into a finished structural product. Such operations include decoiling, leveling or straightening, hot-forming or cold-forming (if applicable), cutting to length, testing, inspection, conditioning, heat treatment (if applicable), packing, marking, loading for shipment, and certification.
Our Supply Range:
Description: Carbon Steel ASME SA572/ ASTM A572 Grade C & D
Manufacturing Types: Hot Rolled
Thickness: 2 to 150 mm
Width: 0.6m to 3m
Length: 6m, 12m, customized
Surface: Natural, Painted
Packing: Standard sea packing, bundled with streel strip.
Other Types of API 5L / ASTM A252/ EN10219-2/ ASTM A572Spiral Steel Pipe / SSAW Steel Pipe: