ASTM A53 Grade B Seamless & Welded Pipes
ASTM A53 Grade B pipes are versatile carbon steel pipes used for mechanical and pressure applications, as well as for steam, water, and air services. Available in both seamless and welded types, they offer good strength, excellent weldability, and reliable performance in various industrial applications.
Phone:+86 18954208811
Email:info@hwdsteel.com
WhatsApp:+86 18954208811
Add:Keda Xunfei Weilaigang Building, No. 1 Jiangshan South Road, Huangdao District, Qingdao City, Shandong Province
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◉ PRODUCT SPECIFICATION


1. Material Standards & Types


Primary Standard:

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

Available Types:

Type

Manufacturing Process

Surface Finish

Key Features

Type F

Furnace Butt-Welded

Continuous weld

Economical, smaller sizes

Type E

Electric-Resistance Welded

Longitudinal weld

Consistent quality

Type S

Seamless

No weld seam

Highest pressure rating


2. Chemical Composition (% by weight, Grade B)


Element

Composition Range

Maximum

Product Analysis Tolerance

Carbon (C)

-

0.30%

+0.01%

Manganese (Mn)

-

1.20%

+0.03%

Phosphorus (P)

-

0.05%

+0.005%

Sulfur (S)

-

0.045%

+0.005%

Copper (Cu)

-

0.40%

+0.03%

Nickel (Ni)

-

0.40%

+0.03%

Chromium (Cr)

-

0.40%

+0.03%

Molybdenum (Mo)

-

0.15%

+0.02%


3. Mechanical Properties (Grade B)


Property

Requirement

Test Standard

Tensile Strength

≥ 415 MPa

ASTM A370

Yield Strength

≥ 240 MPa

ASTM A370

Elongation

See ASTM A53 Table 4

ASTM A370

Hardness

≤ 179 HB (Type S & E)

ASTM E10


4. Physical Properties


Property

Typical Value

Test Standard

Density

7.85 g/cm³

-

Modulus of Elasticity

200 GPa

ASTM E111

Poisson's Ratio

0.30

-

Thermal Expansion Coefficient

11.7 × 10⁻⁶/°C

ASTM E228

Thermal Conductivity

51.9 W/m·K

ASTM E1225


5. Product Specifications


Parameter

Seamless (Type S)

Welded (Type E)

Furnace Butt-Welded (Type F)

Size Range

1/8" - 26" NPS

1/8" - 26" NPS

1/8" - 4" NPS

Wall Thickness

SCH 10 - SCH XXS

SCH 10 - SCH XXS

Standard & Extra Strong

Length

3-12.5m (Random)

3-12.5m (Random)

3-12.5m (Random)

End Finish

Plain, Beveled, Threaded

Plain, Beveled, Threaded

Plain, Threaded


6. Manufacturing Process


Seamless Pipes (Type S):

  • Hot rolling process

  • Cold drawing process

  • No weld seam, uniform structure

Welded Pipes (Type E):

  • Electric resistance welding

  • Continuous weld formation

  • Weld seam heat treatment

Furnace Butt-Welded (Type F):

  • Continuous welding process

  • Suitable for smaller diameters

  • Economical manufacturing


7. Coating Options


Coating Type

Thickness

Application

Standards

Black

-

As-rolled condition

-

Galvanized

85μm min

Hot-dip galvanizing

ASTM A53

Primer

As specified

Shop primer

Project specific


8. Testing & Inspection


Mandatory Tests:

  • Hydrostatic test

  • Non-destructive electric test

  • Flattening test (welded pipes)

  • Bend test (Type F)

  • Tensile test

  • Hardness test

Optional Tests:

  • Charpy impact test

  • Positive Material Identification

  • Third-party inspection

  • Ultrasonic testing


9. Applications


Primary Applications:

  • Plumbing Systems: Water supply lines

  • HVAC Systems: Heating and cooling pipelines

  • Industrial Piping: Process lines, compressed air

  • Structural Applications: Fencing, handrails

  • Oil & Gas: Low-pressure transmission

Service Conditions:

  • Maximum temperature: 400°C

  • Pressure rating: Per ASME B31.1/B31.3

  • Suitable for bending and threading


Quality Assurance:

  • Mill Test Certificate per EN 10204

  • ISO 9001 Quality Management System

  • Complete traceability

  • Batch testing certification


Technical Advantages:

  • Cost-effective solution

  • Excellent availability

  • Good machinability and weldability

  • Suitable for various coating systems

  • Reliable performance in standard applications


All A53 Grade B pipes are manufactured and tested in accordance with ASTM standards and can be supplied with additional testing to meet specific project requirements.

◉ Surfcae selection

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SURFACE CHARACTERISTIC SUMMARY OF MANUFACTURING METHOD APPLICATION
NO.1 Silvery white Hot rolled to specified thickness Do not need to have a glossy surface use
lackluster
NO.2D Silvery white After cold rolling, heat treatment and pickling are carried out General material, deep material
NO.2B Gloss is stronger than No.2D After No.2D treatment, the final light cold rolling is carried out through the polishing roller The general material
BA As bright as a sixpence No standard, but usually a bright annealed surface with high reflectivity. Building materials, kitchen utensils
NO.3 Rough lapping Grind with 100~200# (unit) strop tape Building materials, kitchen utensils
NO.4 Intermediate grinding Polished surface obtained by grinding with 150~180# strop abrasive tape Building materials, kitchen utensils
NO.240 Fine lapping Grinding with 240# strop abrasive tape kitchenware
NO.320 Very fine grinding Grinding was carried out with 320# strop abrasive tape kitchenware
NO.400 The luster is close to BA Use 400# polishing wheel to grind General timber, building timber, kitchen appliances
HL Hairline grinding Suitable particle material for hair stripe grinding (150~240#) with many grains Building, construction material
NO.7 It's close to mirror grinding Use a 600# rotary polishing wheel to grind For art or decoration
NO.8 Mirror ultrafinish The mirror is ground with a polishing wheel Reflector, for decoration

◉ PRODUCTION AND WAREHOUSING

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