• Alloy pipe
  • Seamless steel pipes/tubes
  • Pipe fittings
  • Abrasion resistant pipe

Seamless steel pipe/tubes
Seamless pipe/tubes
We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn & seamless pipes ...
ASTM A335 P22 alloy pipe
ASTM A335 pipes/tubes
ASTM A335 Pipe Specifications, Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
Ceramic lined
Expansion joints
A pipe expansion joint provides stress relief in a piping system due to thermal and mechanical vibration or movements.
New Material >>
Our highly-skilled manpower is dedicated to producing the finest quality steel pipe, fittings & flange meeting a wide variety of material specifications.

Welcome to Sunny Steel Enterprise Ltd.

About us
In the range of  -company profile- you will find your personal contact.
Know-how and best quality

More than ten years of profound knowledge turn Sunny Steel to your competent partner as trading house for valves, fittings and tubes of stainless steel.

We are looking forward to get in contact by phone or email and we hope that you enjoy our website.

Abrasion resistant pipe
The ceramic-lined steel composite pipe
Ceramic Lined Pipes
SHS (Self-propagating High-temperature Synthetic process) ceramic lined steel pipe and elbow...
Bimetal Clad Pipe
Bi Metal Clad Pipe, Bend
Bimetal Clad Pipe and Bend are cast with mold vanishing vacuum suction casting cladding process.
We will help you put together your entire project and ship it to your closest port. We ship globally! Contact us to speak with one of our experienced staff, who can help you with your project needs.
Rare Earth Alloy Casting Pipe
Rare high-strength low-alloy heat-resistant, wear-resistant steel parts for the power plant boiler systems...

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Industries We Serve

Our team of experienced sales specialists proudly partners with gas and chemical processors, power generation plants, oil refineries, and related industries to offer piping components and value-added services.

ASTM A335 P11 alloy pipe

Alloy steel specification, Standard and identification

Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.

Why bevel a pipe?
Why bevel a pipe?
Beveling can applied to the face of any size or diameter of pipe.
ASTM A335 Chrome Moly Pipe
Alloy Steel Chemical composition
Steel Grade Standard Number Type Chemical composition Other
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
1Cr5Mo GB1221 Bar 0.15 0.5 0.03 0.035 0.6 4-6 0.6 0.45-0.6 590 390 18
1Cr5Mo GB6479 Pipe 0.15 0.5 0.03 0.035 0.6 4-6 0.45-0.6 Cu:0.25 390-590 195 22 ak J/cm2:118
1Cr5Mo GB9948 Pipe 0.15 0.5 0.03 0.035 0.6 4-6 0.6 0.45-0.6 Cu:0.25 390 195 22 187 Aku J:92
1Cr2Mo GB9948 Pipe 0.15 0.5-1 0.03 0.035 0.3-0.6 2.15-2.85 0.45-0.65 Cu:0.25 390 175 22 179 Aku J:92
12CrMo GB/T3077 Bar 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.4-0.7 0.3 0.4-0.55 Cu:0.3 410 265 24 179 ψ%:60;Aku2 J:110
12CrMo GB6479 Pipe 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.4-0.7 0.4-0.55 Cu:0.25 410-560 205 21 ak J/cm2:69
12CrMo GB9948 Pipe 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.4-0.7 0.3 0.4-0.55 Cu:0.25 410-560 205 21 156 Aku J:55
12CrMoG GB5310 Pipe 0.08-0.15 0.17-0.37 0.03 0.03 0.4-0.7 0.4-0.7 0.3 0.4-0.55 Cu:0.2 410-560 205 21 Akv J:35
12Cr1MoV GB/T3077 Bar 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.9-1.2 0.3 0.25-0.35 V:0.15-0.3;Cu:0.3 490 245 22 179 ψ%:50;Aku2 J:71
12Cr1MoVG GB5310 Pipe 0.08-0.15 0.17-0.37 0.03 0.03 0.4-0.7 0.9-1.2 0.3 0.25-0.35 V:0.15-0.3;Cu:0.2 470-640 255 21 Akv J:35
12Cr1MoVg GB713 Plate 0.08-0.15 0.17-0.37 0.03 0.03 0.4-0.7 0.9-1.2 0.3 0.25-0.35 Cu:0.3 440 245 19 Akv J:31
12Cr2Mo GB6479 Pipe 0.08-0.15 0.4-0.7 0.035 0.035 0.5 2-2.5 0.9-1.2 Cu:0.25 450-600 280 20 ak J/cm2:48
12Cr2MoG GB5310 Pipe 0.08-0.15 0.5 0.03 0.03 0.4-0.7 2-2.5 0.3 0.9-1.2 Cu:0.2 450-600 280 20 Akv J:35
15CrMo GB/T3077 Bar 0.12-0.18 0.17-0.37 0.035 0.035 0.4-0.7 0.8-1.1 0.3 0.4-0.55 Cu:0.3 440 295 22 179 ψ%:60;Aku2 J:94
15CrMo GB6479 Pipe 0.12-0.18 0.17-0.37 0.035 0.035 0.4-0.7 0.8-1.1 0.4-0.55 Cu:0.25 440-640 235 21 ak J/cm2:59
15CrMo GB9948 Pipe 0.12-0.18 0.17-0.37 0.035 0.035 0.4-0.7 0.8-1.1 0.3 0.4-0.55 Cu:0.25 440-640 235 21 170 Aku J:47
15CrMoG GB5310 Pipe 0.12-0.18 0.17-0.37 0.03 0.03 0.4-0.7 0.8-1.1 0.3 0.4-0.55 Cu:0.2 440-640 235 21 Akv J:35
15CrMog GB713 Plate 0.12-0.18 0.15-0.4 0.03 0.03 0.4-0.7 0.8-1.2 0.3 0.45-0.6 Cu:0.3 450-590 295 19 Akv J:31
15CrMoR GB6654 Plate 0.12-0.18 0.15-0.4 0.03 0.03 0.4-0.7 0.8-1.2 0.3 0.45-0.6 Cu:0.3 450-590 295 19 Akv J:35

Standards for Alloy pipes & tubes

ASTM A213 T91
ASTM A213M-09
for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A333 Grade 6 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
ASTM A333
Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications.
ASTM A335 P22 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
ASTM A335
Astm A335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service
Related alloy steel products:
Carbon steel flanges
Alloy steel flanges
Alloy flanges are designed with care using current techniques under the visionary guidance of accomplished professionals at manufacturing unit.
稀土合金耐磨管
Rare earth alloy wear-resistant tube
Rare earth alloy wear resistant pipe has the characteristics of fast velocity and high flow rate is used for pneumatic, pump slurry, etc.
Wear resistant alloy composite pipe
Wear resistant alloy composite pipe
Wear-resistant alloy steel pipe as the base, lined with ultra-wear-resistant alloy, through the centrifugal casting, metallurgy combined to form a solid.

ASTM A519-89 Standard specification

ASTM A519- specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.

EN10216 Standard specification

EN 10216 is a European standard suitable for seamless steel tubes for pressure purposes.

EN 10216 non alloy steel tubes EN 10216 non alloy steel tubes

The main steel grade:
  • P195GH, P235GH, P265GH, 13CrMo4-5, 10CrMo9-10
  • Other grades of steel pipe can be provided based on negotiations.


About Sunny Steel

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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