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At Royal Steel Group, we supply comprehensive pipe products including welded steel pipe, seamless steel pipe, galvanized steel pipe and ductile iron pipe. Custom specifications are fully acceptable to match your individual project parameters. Count on us for high-quality customized steel & ductile iron pipe solutions for global industrial and infrastructure projects.

"Royal Build The World"

Royal Steel Group

Welded Steel Pipe

ERW Steel Pipe    SSAW Steel Pipe    LSAW Steel Pipe

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Seamless Steel Pipe

Casing Pipe    Structure Pipe    Low Pressure Pipe    Petroleum Line Pipe

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Galvanized Steel Pipe

Hot-dip Galvanized Steel Pipe (HDG)    Electro-galvanized Steel Pipe (EG)

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Ductile Iron Pipe

T-type, K-type, N1/S-type, Flanged and Self-Restrained Joints Ductile Iron Pipe

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-Grades & Standards-

Steel Pipe Grades We Supply

Detailed grade availability across international standards. Select a pipe family to compare grades, typical applications, and request a quote for any row in one click.

Line & Welded Pipe
Seamless Carbon Pipe
Casing & Tubing
Structural Pipe
Galvanized Pipe
Ductile Iron Pipe
Line & Welded Pipe
Grade Standard Typical Application Inquiry
API 5L B PSL1 / PSL2 API 5L General transmission and gathering lines, sweet service                 Get Quote               
API 5L X42 PSL1 / PSL2 API 5L Low-pressure gathering and distribution lines                 Get Quote               
API 5L X52 X52M / X52Q API 5L Transmission lines, moderately sour service options                 Get Quote               
API 5L X60 API 5L Long-distance oil and gas transmission                 Get Quote               
API 5L X65 API 5L Offshore and high-pressure transmission lines                 Get Quote               
API 5L X70 API 5L High-pressure long-distance trunk lines                 Get Quote               
API 5L X80 API 5L Ultra-high-pressure major trunk pipelines                 Get Quote               
ASTM A53 Gr. A ASTM A53 General mechanical and pressure use, welded or seamless                 Get Quote               
ASTM A53 Gr. B ASTM A53 Most common grade – structural, plumbing and pressure service                 Get Quote               
ASTM A252 Gr. 2 ASTM A252 Welded and seamless steel pipe piles, foundation works                 Get Quote               
ASTM A252 Gr. 3 ASTM A252 Higher-strength pipe piles for heavy foundations                 Get Quote               
P235TR1 / P235TR2 EN 10217-1 EN 10217 Welded tubes for pressure purposes at room / elevated temperature                 Get Quote               
P265TR1 / P265TR2 EN 10217-1 EN 10217 Higher-strength welded pressure tubes                 Get Quote               
Seamless Carbon Pipe

 

Grade Standard Typical Application Inquiry
A106 Gr. A ASTM A106 Seamless carbon steel for high-temperature service                 Get Quote               
A106 Gr. B ASTM A106 Boilers, refineries and heat exchangers                 Get Quote               
A106 Gr. C ASTM A106 Higher-strength seamless for high-temperature service                 Get Quote                
A53 Gr. A / B ASTM A53 Seamless and welded pipe for mechanical and pressure use                 Get Quote                
A192 ASTM A192 Seamless carbon steel boiler tubes for high-pressure service                 Get Quote                
A210 Gr. A-1 / C ASTM A210 Boiler and superheater seamless tubes                 Get Quote                
P235TR1 / P235TR2 EN 10216-1 EN 10216 Seamless tubes for pressure purposes                 Get Quote                
P265TR1 / P265TR2 EN 10216-1 EN 10216 Higher-strength seamless pressure tubes                 Get Quote                
20# / 45# GB/T 8162 GB/T 8162 Structural seamless pipe per Chinese standard                 Get Quote                
Casing & Tubing

 

Grade Standard Typical Application Inquiry
J55 API 5CT Casing and tubing for shallow wells                 Get Quote                
K55 API 5CT Casing for moderate-depth wells                 Get Quote                
N80 Type 1 / N80Q API 5CT Mid-depth wells, high strength casing and tubing                 Get Quote                
L80 Type 1 / 9Cr / 13Cr API 5CT Sour (H2S) service casing and tubing                 Get Quote                
C90 Type 1 API 5CT Sour service, high-strength deep wells                 Get Quote                
T95 Type 1 API 5CT Sour service for deep, high-pressure wells                 Get Quote                
P110 API 5CT Deep and high-pressure well casing and tubing                 Get Quote                
Structural Pipe
Grade Standard Typical Application Inquiry
A500 Gr. A ASTM A500 Cold-formed welded carbon steel structural tubing                Get Quote               
A500 Gr. B ASTM A500 Most common structural tubing grade                Get Quote               
A500 Gr. C ASTM A500 Higher-strength structural tubing                Get Quote               
S235JR EN 10219 / EN 10210 Cold-formed / hot-finished structural hollow sections                Get Quote               
S275JR EN 10219 / EN 10210 General structural applications                Get Quote               
S355JR EN 10219 / EN 10210 Heavy-duty structural applications                Get Quote               
S355J2H EN 10219 / EN 10210 Structural hollow sections with low-temperature impact                Get Quote               
Q195 / Q215 / Q235 GB/T 3091 GB/T 3091 ERW steel pipe for general structural and conveying use                Get Quote               

 

Galvanized Pipe
Grade Standard Typical Application Inquiry
A53 Gr. B (Galv.) ASTM A53 Hot-dip galvanized welded / seamless pipe for plumbing and structural use                 Get Quote                
EN 10255 L / M / H EX-BS 1387 EN 10255 Threaded and socketed galvanized tubes, light / medium / heavy series                 Get Quote                
Q195 / Q215 / Q235 GB/T 3091 GB/T 3091 Hot-dip galvanized pipe for general conveying                 Get Quote                
ASTM A123 coating ASTM A123 Specification for hot-dip zinc coating on steel – coating thickness control                 Get Quote                
EN ISO 1461 coating EN ISO 1461 Hot-dip galvanized coatings on fabricated iron and steel articles                 Get Quote                
EG (Electro-galvanized) Customer spec Thin zinc coating for indoor / light-duty applications                 Get Quote                
Ductile Iron Pipe
Grade / Spec Standard Typical Application Inquiry
K9 / K8 / K10 / K12D N80–DN2600 ISO 2531 Ductile iron pipe for water supply, pressure classes PN10–PN40                 Get Quote                
EN 545 EN 545 Ductile iron pipes and fittings for water pipelines (Europe)                 Get Quote                
EN 598 EN 598 Ductile iron pipes for sewerage and drainage                 Get Quote                
ASTM A746 ASTM A746 Ductile iron pipe for gravity sanitary sewer service                 Get Quote                
ANSI / AWWA C151 AWWA C151 Ductile iron pipe for water distribution (North America)                 Get Quote                
T-type · K-type Joints ISO 2531 Push-on (T) and mechanical (K) joint systems with rubber gaskets                 Get Quote                
N1 / S-type · Flanged Joints ISO 2531 Self-restraining (N1/S) and flanged joints for restrained service                 Get Quote                

Need a grade that is not listed here? We also supply custom and special grades on request. Send us your specification and we will confirm availability and delivery within 24 hours.

ROYAL GROUP

Address

Kangsheng development industry zone,
Wuqing district, Tianjin city, China.

Hours

Monday-Sunday: 24-hour Service

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