Alloy steel pipe is a kind of steel pipe, named after its material-alloy steel. It is made by high-quality carbon steel, structural alloy steel and heat-resistant stainless steel. And it is formed by hot rolling or cold rolling.
 
Alloy steel pipes are mainly used for high-pressure and high-temperature pipelines and equipment in power stations, nuclear power plants, high-pressure boilers, high-temperature superheaters and reheaters.
 
Topper is known as a reliable manufacturer and supplier of alloy steel pipes. We are able to provide our customers with impeccable alloy steel pipes, which feature corrosion resistance, low temperature resistance, light weight, small size and good flexibility. Moreover, this alloy pipes are quite economical and saves the cost for it is 100% recycled. Hence, the alloy steel pipe is welcomed by the vast majority of customers. And we stock an extensive inventory of high-quality alloy steel pipes to ensure the best service to our clients.
 
On the basis of ASTM, ASME, DIN, EN, BS, JIS, GOST, GB standards and customers' special requirements, Topper can offer alloy steel pipes with OD 6/25 - 100 inch and WT 1/25 - 8 inch. Customized diameters are also available.

The key specification:
Standards: ASTM A199, ASTM A213, ASTM A333, ASTM/ASME A335, ASTM A519, ASTM A519-89, ASME SA519, GB 9948, GB 5310, GB 18248, EN 10083, EN10216-2, etc.
Materials: ASTM A199 T5, ASTM A199 T9, ASTM A199 T11, ASTM A199 T22, ASTM A213 T2, ASTM A213 T5, ASTM A213 T9, ASTM A213 T11, ASTM A213 T12, ASTM A213 T22, ASTM A213 P91, ASTM A213 P92, ASTM A213 T91, ASTM A213 T92, ASTM A335 P11, ASTM A335 P12, ASTM A335 P5, ASTM A335 P22, ASTM A335 P9, ASTM A335 P91, ASTM A335 P92, ASTM A333 (ASME SA333) Gr.1, ASTM A333 Gr.6, ASTM A333 Gr.3, ASTM A519 4130, ASTM A519 4135, ASTM A519 4130X, ASTM A519 4140, GB 9948 12Cr5Mo NT, GB 9948 12Cr5MoI, GB 9948 12Cr9Mo, GB 9948 15CrMo, GB 9948 12Cr2Mo, GB 5310 12Cr1MoVG, GB 5310 15CrMoG, GB 18248 30CrMo, GB 18248 35CrMo, GB 18248 42CrMo, EN 10083 34CrMo4, EN 10216-2 13CrMo4-5, EN 10216-2 1-CrMo9-10, EN 10216-2 X10CrMoVNb9-1, EN 10216-2 15NiCuMoNb5-6-4, etc.
Wall Thickness: 1 - 200 mm (1/25 Inch - 8 Inch).
Outer diameters: 6/25 Inch - 100 Inch.
Lengths: Single Random (SRL), Double Random (DRL), Standard & Cut Length, or customized length.
Ends: Plain End, Beveled End, Treaded.
 

Carbon steel piping is made from carbon steel, an alloy with iron and carbon. This pipe is formed by tubular billets through hot rolling, cold rolling or cold drawing.  
 
Due to its strength and ability to withstand pressure, the carbon steel pipe is versatile and useful for various heavy industries, such as infrastructure, ships, distillers, and chemical fertilizer equipment. It can also be used for natural gases or oil transportation, OEM applications, high-pressure applications, etc.

As one of the experienced manufacturers and suppliers in China, Topper is able to offer clients high-quality carbon steel pipes that are characterized by safety and durability because these pipes is shock resistant and not influenced by harsh environmental conditions. And these pipes with thinner bodies and less materials still can transport high volumes, meaning it's cost-effective. Meanwhile, the carbon steel pipe is recyclable, making it eco-friendly. 
 
Topper carries a complete inventory of carbon steel pipes to meet your application needs. The pipes range in size from 5.0mm - 1219.2mm OD according to ASTM, DIN, EN and other international standards. All of our pipe can be customized, dependent on your applications and specifications. And you'll find the most suitable one. 
 
The key specification:

Standards: ASTM A210, ASTM A213, ASTM A53, ASTM A106, ASTM A333, ASTM A671, API 5L, ASTM A500, ASTM A672, DIN 2448, DIN 2391, EN 10210, EN 10219, EN 10025, IS 1161, IS 3601, IS 4923, IS 1239, etc.          
Materials: ASTM A210 Grade A1, ASTM A213 T9, ASTM A53 Gr. A, ASTM A53 Gr. B, ASTM A106 Gr.A, ASTM A106 Gr.B, ASTM A106 Gr. C, ASTM A333 Gr. 6, ASTM A333 Gr.1, ASTM A671 Gr.CC60, ASTM A671 GR. CC65, API 5L Gr.B PSL1, API 5L Gr.B PSL2, ASTM A500 Gr.B, ASTM A672 Gr. B60, ASTM A672 C65, ASTM A672 C70, DIN 2448 ST 52, DIN 2448 ST 35, DIN 2448 ST 37, DIN 2391 ST 35, DIN 2391 ST 37, EN 10210 S355J2H, IS 1161 YST 240, IS 1161 YST 210, IS 1161 YST 310, IS 1161 YST 355, IS 3601 WT 210, IS 3601 WT 240, IS 3601 WT310, IS 4923 YST 210, IS 4923 YST 310, EN 10219 S235JRH, EN 10219 S355JOH, EN 10219 S275JOH, EN 10025 S275JR, API 5L X42, API 5L X46, API 5L X52, API 5L X56, API 5L X70, API 5L X60, API 5L X65, IS 1239 YST 210, IS 1239 YST 240, IS 1239 YST 310, IS 1239 YST 355, etc.
Wall Thickness: 1/25-3/5 Inch, 1.0mm - 15.0mm.
Outer diameters: 1/5-48 Inch, 5.0mm - 1219.2mm.
Lengths: Up to 6 Meters.
Ends: Plain End, Beveled End, Treaded.
 

Stainless steel pipe contains stainless steel seamless pipe and stainless steel welded pipe, commonly used for oil and gas, nuclear power, LNG (liquefied natural gas), desalination, mining, minerals, in constructions, food industry, pharmaceutical industry, petrochemical industry, automotive industry, municipal and decorative purposes. ect.
 
As one of the trusty manufacturers in China, TOPPER supplies superior stainless steel pipe with high corrosion resistance, high ductility, attractive appearance, low maintenance, greater strength, durable mill finish, good workability that easy to weld, moderate cutting, forming and machining, high adaptation in environments with elements that it is exposed to: chemical, acidic, fresh water, salt water, ect.
 
TOPPER stainless steel pipe is in line with specifications as follows:
For Seamless Stainless Steel Pipe:
Pipe Standard: ASTM A213, ASTM A312, ASTM A269, ASTM A778, ASTM A789, DIN 17456, DIN 17457, DIN EN 10216, BS 3605, JIS 3459, JIS 3463, GOS T9941, ect.
Material: SS 304, SS 304L, SS 316, SS 316L, SS 201, SS 202, SS 301, SS 347, SS 347H, SS 316Ti, SS 309s, SS 310s.
Outside Diameter: 1/10-98 Inch, 0.118-98.425 Inch, 3-2500 mm or customized.
Wall Thickness: 1/25- 6 Inch, 0.039-5.9 Inch, 1.0-150mm or as requested.
LENGTH: 5.8m, 6m, 11.8, 12m or up to 12m.
Process: Cold drawn, Cold rolled, Precision Rolled.
Finish: Annealed & pickled, bright annealing, polished.
 
For stainless steel welded pipe:
Standard: ASTM A240, ASTM A269, ASTM A312, ASTM A358, ASTM A778, ect.
Steel Grades: SS 304, SS 304L, SS 304H, SS 310/S, SS 310H, SS 316, SS 316L, SS 321, SS 321H.
Outside Diameter: 1-1/8 Inch-36 Inch or as requested.                    
Wall Thickness: SCH 5, SCH 10S, SCH 40S, SCH 80S, SCH-STD, SCH-XS, SCH-XXS, ect.
Surface: Annealed, Pickling, Polished.
Packing: Waterproof Paper Wrapped, Packed in Wooden Cabins.
 
With the added support of industry specialized engineering teams to help design, build, and manage projects, Topper Steel Pipe is able to facilitate the customer's stainless steel pipe and piping system needs. 
 

Iron Pipe includes cast iron pipe and ductile iron pipe, used for liquid transmission and distribution such as potable water or oil.
 
Regarded as one of the superior manufactures in China, Topper provides iron pipes that are higly corrosion resistant, strong in structure, tight in joints and readily machinable.
 
Our iron pipes comply with iron pipe specificaitons as follows:
Standard: ASTM, ASTM A716, ASTM A746, ANSI A21.6, ANSI A21.8, AWWA C106, AWWA C108, ANSI A21.2, AWWA C102, ASTM A888, AWWA C-151, ISO 2531, EN 545, EN 598 (metric), AS 2280, NZS 2280 (metric), ect.
Wall Thickness: 1/5-2 Inch, 0.189 Inch-2.39 Inch or as requested.
Outer Diameters: 3.96 Inch-88.54 Inch, ect.
Lengths: 10-577 FT., SRL, DRL, specified length or customized length.
Pressure rating: Class 150-350, K9, K10, DN40-2000, PN20, PN35.
 
With the added support of industry specialized engineering teams to help design, build, and manage projects, Topper Steel Pipe is able to facilitate the customer's iron pipe and piping system needs. 
 

Welded steel pipe is formed by rolling plate and welding the seam. It is cost-effective pipe with tighter dimensional tolerances and less weight. It is intended for conveying gas, vapor, water or other liquid in low and medium pressure ambient, such as water mains system, sewerage system, oil and gas pipeline, fire protection service, etc.
 
As one of the professional welded steel pipe manufacturers in China, Topper provides welded steel pipe in advanced technology to remove the weld flash from both inner and outer surfaces. We offer an extensive selection of welded pipe including ERW steel pipe, LSAW steel pipe, SSAW steel pipe with high accuracy, uniform wall thickness, high brightness of inner and outer surface, lighter weight, corrosion resistance in acid, alkali, salt and atmospheric environment, high temperature resistance, good impact resistance and fatigue resistance, excellent mechanical properties and easier machining process.
 
The welded steel pipe we provide is in accrod with specifications as follows:
Standard: ASTM, GB, API, JIS, BS, DIN, YB, SNY, ASTM A53, API-5L, ASTM B36.10, ASTM A135, ASTM A795, ASTM A78, ASTM A178M, ASTM A500, ASTM A252, BS 1387, EN 10255, JIS G3444, ASTM A139 Grade B, ASTM A252 Grades 2 & 3, ASTM A691, ect.
Wall Thickness: 3/10-2 Inch, 0.315 - 1.969 Inch or customized.
Outer Diameters: 1/2 - 143 Inch, or as requested.
Length: Less Than 12m, up to 12m, 6m-12m or as requested.
 
With the added support of industry specialized engineering teams to help design, build, and manage projects, Topper is able to facilitate the customer's welded steel pipe and piping system needs.
 

Seamless steel pipe (SMLS) is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section formed by drawing a solid billet over a piercing rod to create the hollow shell without a seam or a weld-joint, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids. Seamless steel pipe can be cut, threaded or grooved. And the coating method includes black, red lacquer, varnish painting, hot dip galvanization, etc.
 
As a responsible manufacturer in China, TOPPER provided seamless steel pipes suitable for bending and flanging. The most advantage of our seamless steel pipes is the increased ability of withstanding higher pressure. It is widely welcomed by customers in industries of boiler and pressure vessel, automotive area, oil well, equipment components, ect.
 
The production of our seamless pipes is tightly regulated and all of the pipes we stock have been fully tested to international standards to ensure we only supply the highest quality products.
 
Product Details:  
Standard: ASTM A53 Gr.B, ASTM A106 Gr.B, ASTM SA179, ASTM SA192, ASTM SA210, ASTM A213, ASTM A333 GR.6, ASTM A335 P9, P11, T22, T91, ASTM A336, ASTM SA519 4140, ASTM SA519 4130, API Spec 5CT J55, K55, N80, L80, P110, K55, API Spec 5L PSL1, API Spec 5L PSL2 Gr.b, X42, 46, 52, 56, 65, 70, DIN 17175, DN2391, DIN 1629, DIN 2391-1, EN10216-1, EN 10208, JIS G3454, JIS G3455, JIS G3456, ect.
Outer Diameters: 1/2-36 Inch, 0.54-36 Inch, 13.72-914.4mm or as requested.
Wall Thickness: 1/20-2 Inch, 0.049-1.969 Inch, 1.25-50mm or customized.
Length: 5.8m, 6m, 11.8m, 12m, up to 12m.
 
With the added support of industry specialized engineering teams to help design, build, and manage projects, Topper is able to facilitate the customer's seamless steel pipe and piping system needs.
 

Pipe fittings are piping components that help in changing the direction of the flow such as elbows, tees; changing the size of the pipe such as reducers, reducing tees; connect different components such as couplings and stop the flows such as caps.
 
There are different types of pipe fittings used in piping. Pipe fittings used in piping work are mainly Elbow, Tee, Reducer, Union, Coupling, Cross, Cap, Swage Nipple, Plug, Bush, Expansion Joint, Adapters, Olet (Weldolet, Sockolet, Elbowlet, Thredolet, Nipolet, Letrolet, Swepolet), Steam Traps, Long Radius Bend, Flanges and Valve. 
 
As a leading pipe fitting manufacturer in China, TOPPER offers a large inventory of pipe fittings, in applications largely helping the flow of liquids or gas. We have a wide range of pipe fittings and accessories available with good quality at competitive price.
 
Common Types of pipe fittings
At TOPPER Steel Pipe, we stock many types of pipe fittings. Our most popular are threaded fittings, malleable fittings, compression fittings and push-fit fittings. We provide pipe fittings as follows: Pipe Elbow, Pipe Tee, Pipe Cross, Pipe Reducer, Pipe Bend, Pipe Caps, Pipe Flange.
 
What material is best?
Pipe fittings can be made in many different materials. Some materials are better for some functions than others:
Copper: It can withstand very high temperatures. Always used for the final connections made to boilers or furnaces for central heating.
PVC & ABS: They are light and non-toxic. They have more functions than copper therefore when water freezes and expands in the piping there is little chance of it bursting.
Stainless Steel: Often used for aesthetic reasons where plumbing is exposed. More corrosion resistant than copper but more rigid.
Iron: Malleable (ductile) iron is a good choice in industry because it is stronger than copper and plastic but rarely used in domestic installations.
PEX: Cross-linked high-density polyethy; PEX is ductile and tough and works well in very low temperatures. When installing, be aware that it can expand drastically and it needs to be shielded when used outdoors because it is susceptible to UV.
 
To learn more about our current selection of pipe fittings for sale or pipe solution services, please feel free to contact us at TOPPER Steel Pipe.