ASTM A53 Grade B Seamless Steel Pipe

ASTM A53 Grade B Seamless Steel Pipe

ASTM A53 / A53M  Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A53 Grade A,B Seamless Steel Pipes used extensively for the transport of fluids, such as pipelines for the transport of oil, natural gas, gas, water and certain solid materials.

ASTM A53 Grade B Seamless Steel Pipe Quick Details

Company Name：Beite steel pipe

Country/Region：China

Material：Grade B

FOB Price: US $500-1,000 / Ton | 1 Ton/Tons (Min. Order)

Port of Shipment：Tianjin,China

Payment：L/C or T/T

Delivery: 7-15 days after payment

Type of End-Finish：PE

Technique: Cold Drawn

Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting. Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles.

ASTM A53 Grade B Seamless Steel Pipe Dimensional Range & Specification

Outside Diameter ：21.3mm——219mm

Wall thickness：1.8mm——15mm

Length：6000mm、12000m or specified length as required. 

Materials and Manufacture

The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric-furnace, or basic-oxygen.

When steels of different grades are sequentially strand cast, identification of the resultant transition material is re- quired. The producer shall remove the transition material by any established procedure that positively separates the grades。

The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding to a minimum of 1000°F [540°C] so that no untempered martensite remains, or otherwise processed in such a manner that no untempered martensite remains.

When pipe is cold expanded, the amount of expansion shall not exceed 11⁄2 % of the outside diameter pipe size.

ASTM A53 Grade B Seamless Steel Pipe Chemical Composition(%)

ASTM A53 Grade B Seamless Steel Pipe Mechanical Properties

Bending Requirements

For pipe NPS 2 [DN 50] and under, a sufficient length of pipe shall be capable of being bent cold through 90° around a cylindrical mandrel, the diameter of which is twelve times the outside diameter of the pipe, without developing cracks at any portion and without opening the weld.

Double-extra-strong pipe over NPS 1 1 ⁄ 4 [DN 32] need not be subjected to the bend test.

Tests and Inspection

Flattening Test

Flaring Test

Hardness Test

Hydrostatic or Nondestruction Electric Test ( Eddy Current and Ultrasonic Testing)
Hydrostatic Testing

Hydrostatic inspection test pressures for plain end and threaded and coupled pipe are specified. Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and electric-resistance-weld pipe.

Test Methods

The longitudinal tension test specimen shall be taken from the end of the pipe or, for continuous-welded pipe, it shall be permissible to be taken from the skelp, at a point approxi- mately 90° from the weld, and shall not be flattened between gage marks. The sides of each specimen shall be parallel between gage marks. If desired, the tension tests are permitted to be made on the full section of pipe. When impracticable to pull a test specimen in full section, the standard 2-in. 

Transverse weld test specimens from electric- resistance-welded pipe shall be taken with the weld at the center of the specimen. All transverse test specimens shall be approximately 11⁄2 in. [40 mm] wide in the gage length and shall represent the full wall thickness of the pipe from which the specimen was cut.

Test specimens for the bend and flattening tests shall be taken from pipe. Test specimens for the flattening test shall be smooth on the ends and free from burrs.

All specimens shall be tested at room temperature.