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Here, you`ll find your special steel products

Sunny Steel provide a wide range of steel products are used in the industry, construction etc. If we don`t have a material in stock, we will fall back on our big Chinese network of dealers, manufacturers, smiths and machining companies. Thus, we`ll make sure that your request won`t fall by the wayside.

Should the material you desire not be included, please contact us anyway! We' ll find a solution.

Seamless steel pipe
Seamless steel pipe
We can makes and markets cold-drawn and hot rolled seamless steel pipes without a seam or a weld-joint.
Alloy steel pipes
Alloy steel pipes
SunnySteel supplier alloy steel pipes & tubes as ASTM A213,A335 and A333 used for many different purposes.
Welded pipes and tubes
Welded steel pipes
Welded steel pipe is a tubular product made out of ERW, HFI, EFW, LSAW, DSAW and UOE type
Weldable Components
Weldable Components
Weldable components are used to connect pipes that include elbow, tee, cross, reducer & bending.
ASTM A333 Grade 4 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
Stainless Pipes and tubes
Stainless Products inventories stainless steel seamless tube, welded tube, seamless pipe
SSAW pipe
Flange
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.

Types of Abrasion resistant pipes Are Available?

Most common Seamless pipes by Standards

Seamless steel pipes / tubes

We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanica...

+ Big Out diameter seamless pipes

Structure engineering

+ Seamless Pipes by applications

Carbon Steel Seamless Pipes

+ Carbon Steel Pipes

Hot rolled seamless steel pipe

+ Hot rolled seamless steel pipe

Precision cold drawn tube

+ Precision cold drawn tube

Galvanized Seamless tube

+ Galvanized Seamless tube

Common type of Butt weld pipe fittings

Butt weld fittings are available as elbows, tees, caps, reduces and out lets (olets).

Long radius elbows
Long radius (LR) elbows

Long Radius (LR) Elbows – radius is 1.5 times the pipe diameter

Short radius elbows
Short radius (SR) elbows

Short Radius (SR) Elbows – radius is 1.0 times the pipe diameter

API Pipe bend
Bending

Pipe bend can be made of variety materials,like carbon steel,alloy steel,stainless steel,low temperature steel or high performance steel,etc.

Tees straight and reducing
Tee

We can provide seamless tube tees and welding tube tees,which can also be divided into straight tees and reducing tees.

Carbon steel end caps
Cap

Pipe cap is usually used for protecting the end of pipe and other fittings,so the shape is disigned according to the shape of pipe line.

ASTM A234 WPB Concentric Reducer
Reducer

Pipe reducer are tube fittings that are widely used in a number of industries in order to providing greatest connection...

ASTM A335 P22 alloy steel pipe
Chrome Moly Pipe
ASTM A335 Pipe (ASME S/A335, Chorme-Moly) is a seamless ferritic Alloy-Steel Pipe for high temperature service.
Seamless pipes for high temperature and pressure service
Low Temperature Pipe
ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service.
Alloy steel pipes stock
These offered alloy pipes are available with us in divergent sizes and specifications meeting divergent demands of the clients.
High Temperature service tube
High Temperature service tube are typically knows as heat exchanger tube, which operates at 400 degree Celsius to 1100 degree Celsius.
EN 10216 non alloy steel tubes
This part of EN1026 specifies the technical delivery conditions in two test categories for seamless tubes...
ASTM A519 carbon and alloy steel mechanical tubing
ASTM A519 mechanical tubing
 ASTM A519 specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.
ASTM A213 T5b Seamless alloy tube

Welded pipes by Welding process

Welded steel pipe including ERW, HFI, EFW, LSAW, DSAW and UOE type carbon steel pipe along with their respective flanges and fittings.

ERW pipes
A plate rolled to become a pipe and welded using Electric Resistance Welding process.
UOE (Uing and Oing forming) Pipes
UOE (Uing and Oing forming) Pipes
J-ing, C-ing and O-ing pipes
J-ing, C-ing and O-ing pipes
Spiral submerged-arc welding pipes
Spiral submerged-arc welding pipes

Tech & Grade for Stainless steel

Stainless steel is one of the more standardized materials in the building and engineering industries.

Related stainless steel products

Stainless carbon steel composite pipe
Stainless composite pipe
Stainless Steel Flanges
Stainless Steel Flanges
Stainless steel pipe fittings
Stainless steel pipe fittings
Austenitic stainless steel
Steel No. Standard No. Type Chemical composition Other
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
00Cr17Ni14Mo2 GB1220 Bar 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 177 40 187 ψ%:60
00Cr17Ni14Mo2 GB4237 Plate 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 177 40 187
00Cr17Ni14Mo2 GB/T14976 Pipe 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 175 35
00Cr19Ni10 GB1220 Bar 0.03 1 0.03 0.035 2 18-20 8-12 480 177 40 187 ψ%:60
00Cr19Ni10 GB4237 Plate 0.03 1 0.03 0.035 2 18-20 8-12 480 177 40 187
00Cr19Ni10 GB/T14976 Pipe 0.03 1 0.03 0.035 2 18-20 8-12 480 175 35
0Cr17Ni12Mo2 GB1220 Bar 0.8 1 0.03 0.035 2 16-18.5 10-14 2-3 520 205 40 187 ψ%:60
0Cr17Ni12Mo2 GB4237 Plate 0.8 1 0.03 0.035 2 16-18 10-14 2-3 520 205 40 187
0Cr17Ni12Mo2 GB/T14976 Pipe 0.8 1 0.03 0.035 2 16-18.5 10-14 2-3 520 205 35
0Cr18Ni9 GB1220 Bar 0.7 1 0.03 0.035 2 17-19 8-11 520 205 40 187 ψ%:60
0Cr18Ni9 GB4237 Plate 0.7 1 0.03 0.035 2 17-19 8-11 520 205 40 187
0Cr18Ni9 GB/T14976 Pipe 0.7 1 0.03 0.035 2 17-19 8-11 520 205 35
0Cr18Ni10Ti GB1220 Bar 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 40 187 ψ%:50
0Cr18Ni10Ti GB4237 Plate 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 40 187
0Cr18Ni10Ti GB/T14976 Pipe 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 35
0Cr18Ni12Mo2Ti GB1220 Bar 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 40 187 ψ%:55
0Cr18Ni12Mo2Ti GB4237 Plate 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 37 187
0Cr18Ni12Mo2Ti GB/T14976 Pipe 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 35
1Cr18Ni9 GB4237 Plate 0.15 1 0.03 0.035 2 17-19 8-10 520 205 40 187
1Cr18Ni9 GB5310 Pipe 0.15 1 0.03 0.035 2 17-19 8-10 Cu:0.2 520 205 35
0Cr25Ni20 GB1220 Bar 0.08 1 0.03 0.035 2 24-26 19-22 520 206 40 187
ASTM A312/A312M
Steel No. Type Chemical composition
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
TP304 0.08 0.75 0.03 0.04 2 18-20 8-11 515 205 35
TP304H 0.04-0.1 0.75 0.03 0.04 2 18-20 8-11 515 205 35
TP304L 0.035 0.75 0.03 0.04 2 18-20 8-13 485 170 35
TP316L 0.035 0.75 0.03 0.04 2 16-18 10-15 2-3 485 170 35
TP321 0.08 0.75 0.03 0.04 2 17-20 9-13 Ti:5C%-0.7 515 205 35
ASTM A312 Mechanical Property:
Steel Grade Heat Treatment Temperure Min. º F(º C) Tensile Strength Ksi (MPa), Min. Yield Strength Ksi (MPa), Min. Elongation %, Min
TP304 Solution 1900 (1040) 75(515) 30(205) 35
TP304L Solution 1900 (1040) 70(485) 25(170) 35
TP304H Solution 1900 (1040) 75(515) 30(205) 35
TP310S Solution 1900 (1040) 75(515) 30(205) 35
TP316 Solution 1900(1040) 75(515) 30(205) 35
TP316L Solution 1900(1040) 70(485) 25(170) 35
TP316H Solution 1900(1040) 75(515) 30(205) 35
TP316Ti Solution 1900(1040) 75(515) 30(205) 35
TP321 Solution 1900(1040) 75(515) 30(205) 35
TP321H Solution Cold: 2000(1100) Hot: 1925(1050) 75(515) 30(205) 35
TP347 Solution 1900(1040) 75(515) 30(205) 35
TP347H Solution Cold: 2000(1100) Hot: 1925(1050) 75(515) 30(205)
ASTM A312 Equivalent steel grade:
ASTM A312 JIS G3459 DIN 17440 BS NF
TP304 SUS 304 TP X5CrNi 18 9 304S18 A 49-230
TP304H SUS 304 HTP 304S59 A 49-214
TP310 304 LTP X2 CrNi 19 9 304S14 A 49-230
TP316 SUS 304L TP
TP316H 310STP X5 CrNiMo 18 10 316S18 A 35-573
TP316L SUS 316 TP 316S59 A 49-230
TP321 SUS 316 LTP X2 CrNiMo 18 10 316S14 A 49-230
TP347 316 HTP x10 CrNiTi 18 9 321S18 A 49-230
TP347H SUS 316 LTP X5 CrNiNb 18 9 347S18 A 35-573
Nominal wall thickness for ASTM A312(Seamless and straight seame welded steel pipes)
NPS ASTM A312  WT Tolerance, %
+ –
1/8-2 1 /2 20.0 12.5
3~18, t/D≤ 5% 22.5 12.5
3~18, t/D> 5% 15.0 12.5
≥ 20, welded 17.5 12.5
≥ 20, seamless, t/D≤ 5% 22.5 12.5
≥ 20, seamless, t/D> 5% 15.0 12.5
ASTM A312 Stainless Steel Pipes OD Tolerance
NPS ASTM A312  OD Tolerance
+ –
inch mm inch mm
1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48 1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) 0.4 0.8 1.6 2.4 3.2 4.0 4.8 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 0.8 0.8 0.8 0.8 0.8 0.8 0.8


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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