Description: BBN steel is a well-known steel manufacturer and service provider in China, ASTM A53 GRB steel pipe is our superior product, we are favored by customers with high quality, competitive price and excellent service
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
ASTM A53 Grade B Carbon Steel Pipe | Seamless & ERW Types for Low & Medium Pressure Service
Seamless, ERW & Hot-Dip Galvanized Types | SCH 40 Full Stock, 1/8–26 in., up to 100 in. Custom | MTC EN 10204 3.1 Certified
Seamless & ERW TypesA53 Grade B seamless pipe for precision installation; A53 B ERW pipe for structural strength — hot-dip galvanized finish optional.
Medium-Low Pressure ReadyStable pressure-bearing performance with excellent toughness and stable wear resistance for conventional fluid transmission.
Full Sizes & Sufficient Stock1/8–26 in. full size range, up to 100 in. custom — 3–7 days stock delivery, 15–30 days custom.
01What Is ASTM A53 Grade B
ASTM A53 Grade B is the most popular general-purpose carbon steel pipe, widely used for low and medium-pressure service. It covers both seamless and ERW (electric resistance welded) types, featuring excellent toughness, stable wear resistance and reliable pressure-bearing performance. With outstanding cost-effectiveness, it serves as the primary choice for most civil and industrial conventional piping systems.
Compared with alloy steel, A53 Grade B offers better ductility and wear resistance, fully meeting the demands of conventional non-corrosive fluid transmission. Seamless pipes feature precise dimensions — ideal for precision and narrow-space installation; ERW welded pipes deliver high structural strength and stable weld toughness — perfectly suitable for secondary welding and on-site fabrication projects.
02Product Specifications
We provide full-size ASTM A53 Grade B carbon steel pipes with sufficient stock, supporting standard and customized size production and one-stop processing services for diverse engineering projects.
Industrial fluid transmission, building piping, power and mechanical auxiliary systems
Surface Condition
Smooth surface, uniform texture, no cracks, no burrs
MOQ
1 Ton / Negotiable
Delivery Time
3–7 days (stock); 15–30 days (custom)
Custom Service
Custom size, cutting, threading, bending and deep processing
Certification
MTC / EN 10204 3.1 / Third-party inspection available
Payment Terms
T/T, L/C, Western Union, Trade Assurance
03A53 Grade B Global Equivalent Grades
ASTM A53 Grade B has multiple internationally recognized equivalent grades with similar chemical composition and mechanical properties, supporting cross-standard replacement for most conventional industrial and civil projects worldwide.
Standard Region
Equivalent Standard
Equivalent Grade
Chinese GB Standard
GB/T 700 / GB/T 8163
Q235B20# Steel
European EN Standard
EN 10025-2
S235JR
Japanese JIS Standard
JIS G3452 / G3101
SGPSS400
American Standard
ASTM A106 / API 5L
Grade B
International ISO Standard
ISO 630
E235B
Note: Minor differences exist in specification tolerance and technical parameters among equivalent grades. For high-pressure and key engineering projects, please confirm detailed requirements before grade replacement to ensure operational safety.
04Chemical Composition (Max Mass Fraction %)
ASTM A53 Grade B adopts an optimized carbon steel formulation with strictly controlled impurity elements. Precise component proportion ensures excellent welding performance, stable toughness and qualified medium-low pressure bearing capacity, fully complying with global industrial piping production standards.
Element
Content Standard (Max %)
C (Carbon)
0.30
Mn (Manganese)
1.20
P (Phosphorus)
0.05
S (Sulfur)
0.045
Cu (Copper)
0.40
Ni (Nickel)
0.40
Cr (Chromium)
0.40
Mo (Molybdenum)
0.15
V (Vanadium)
0.08
05Manufacturing Process Standard
All ASTM A53 Grade B pipes are manufactured under standardized smelting, casting and welding procedures with full-process quality control, ensuring stable dimensional accuracy and consistent mechanical performance for every product batch.
Process Link
Technical Standard
Steel Making
Electric furnace or basic oxygen furnace smelting; independent casting for different grades with complete transition material removal to avoid material mixing.
ERW Weld Heat Treatment
Minimum 540℃ (1000℉) post-weld heating to eliminate untempered martensite and enhance weld seam toughness and stability.
Cold Expansion Limit
Max cold expansion rate ≤1.5% of pipe diameter to guarantee overall dimensional stability and structural integrity.
06Product Features & Advantages
Upgraded for medium-low pressure service with higher pressure resistance than Grade A, ASTM A53 Grade B delivers outstanding toughness, stable wear resistance and excellent welding performance — the most versatile carbon steel pipe for conventional industrial and civil engineering projects.
01
Upgraded Pressure Performance
Higher pressure resistance than Grade A, delivering reliable medium-low pressure bearing for conventional fluid service systems.
02
Toughness & Wear Resistance
Excellent toughness and stable wear resistance ensure long service life in continuous fluid transmission projects.
03
Weldability & Fabrication
Excellent welding performance supports flexible cutting, bending, threading and secondary welding for on-site fabrication.
04
High Cost Performance
Better ductility and wear resistance than alloy steel at lower cost — the most versatile choice for civil and industrial piping.
07Application Fields
With reliable medium-low pressure bearing capacity, excellent toughness and stable processability, ASTM A53 Grade B pipes are widely used in fluid transmission, construction, mechanical manufacturing and power industry scenarios.
Transmission Engineering
Oil and gas conveying pipelines, water treatment systems, mineral slurry transportation, water supply, irrigation, seawater and sewage transmission projects.
Building & Structural Engineering
Building internal piping, underground water drilling pipelines, boiler water delivery systems and municipal supporting piping facilities.
Mechanical & Power Industry
Mechanical equipment supporting parts, wind turbine auxiliary pipelines, anti-static tubes and power station auxiliary piping systems.
08Hot-Sale A53 Grade B Pipe Types & Schedules
The four most-demanded configurations of ASTM A53 Grade B carbon steel pipe — seamless pipe, ERW welded pipe, galvanized pipe and SCH 40 schedule — all available from stock with MTC EN 10204 3.1 certification and fast delivery.
A53 Grade B Seamless Pipe
Type S seamless carbon steel pipe — no weld seam, precise dimensions and uniform wall thickness. The reliable choice for medium-low pressure fluid transmission, precision and narrow-space installation. Full 1/8"–26" size range in stock.
A53 Grade B Galvanized Pipe
Hot-dip zinc coated A53 Grade B pipe with enhanced corrosion resistance for outdoor, underground and humid environments — widely used for water supply, fire-protection and structural piping. Black and galvanized finishes both available.
ASTM A53 Gr.B SCH 40 Pipe
The most ordered wall schedule for A53 Gr.B pipe, held in stock across all standard sizes — 1/2" (WT 2.77 mm), 2" (WT 3.91 mm), 4" (WT 6.02 mm), 6" (WT 7.11 mm) and larger. SCH 10 / SCH 80 / STD also available on request.
A53 B ERW Pipe
Type E electric resistance welded pipe with ≥540℃ post-weld heat-treated seam — high structural strength, stable weld toughness and better economy for large-quantity projects. Ideal for secondary welding and on-site fabrication.
Get Your A53 Grade B Pipe Official Quotation
Tell us your pipe type (Seamless / ERW / Galvanized), size (OD × Wall Thickness, e.g. SCH 40), quantity and project requirements. We will reply with stock status, competitive wholesale quotation and complete certification documents within 24 hours.
BBN Steel has established a complete set of production and supplier management system processes to ensure the improvement of product quality and better service to users.
Production Control
BBN Steel has established a complete production quality control process to ensure every link from research and development to mass production.
Supplier management
Our supplier selection will consider factors such as health and safety, ethics, environmental protection, price and quality to better serve customers.
Certification & Patent
We have successively won various international authoritative certifications, GB /T19001-ISO9001: 2000 quality management system was implemented.
After sales service
We provide booking space, shipping tracking service and after-sales service, we will always be first-class products and perfect pre-sale and after-sales service.
Get in Touch
Welcome to contact us through online consulting, emails and hotline if you are interested in our company or products. Our staff will reply you within 24 hours.
Address: HIGH-TECH DEVELOPMENT ZONE, ZHENGZHOU, CHINA
