Menu
- Nipples / Adapters external threads(273)
- Couplings / half coupling - internal threads(341)
- Cast iron reductions / extensions(43)
- Reduction(258)
- Compression Fittings(12)
- Elbows(337)
- Cross(22)
- Tees(172)
- Plugs(155)
- Caps(67)
- Pipe nipple(206)
- Hose-end fittings(91)
- Unions(178)
- Sockolet / Weldolet / Threadolet / Boss / Elbolet / Couplet(145)
- Measuring connection(3)
- Pipes(50)
- Flanges(151)
- Valves(181)
- Gaskets / Sealant tapes(268)
- Thread washers and seals(132)
- Slide bushing(136)
- Socket Weld Fittings(178)
- Air Springs(39)
- Pendant control station(237)
- Limit switches(33)
- Electronics(17)
- Thermostat(4)
- Potentiometer(9)
- BRAHMA(7)
- Rectifiers(15)
- Building supplies(3)
- FACOM(9)
- Screws(26)
- Packaging(3)
- Other products(43)
- Heads(16)
- Flange stubs(9)
- Liquefaction of goods(7)
New products
Products on sale
Login
Product of the Day
€3.90
€3.17
€0.29
€0.24
€87.99
€71.54
€1.28
€1.04
Socket Weld Reducing Coupling 1" × 2" ASTM A105 Class 3000
Regular price:
Regular price:
product unavailable
add to wish list
Description
Socket Weld Reducing Coupling 1" × 2" ASTM A105 Class 3000
- Size: 1" × 2"
- Dimension B2: 33.9–34.3 mm
- Dimension B1: 61.2–61.7 mm
- Socket Weld reducing coupling
- Material grade: ASTM A105 (equivalent to P245GH / P285GH)
- High-pressure boiler-grade carbon steel
- Suitable for welding
- Pressure class: Class 3000 (206 bar)
- 3.1 material certificate available on request (free of charge)
- Socket Weld fitting manufactured according to ANSI B16.11
- Applications: Industrial installations, steel industry, marine industry, refineries, boilers, high-pressure piping systems
- Origin: European Union

Alternative Name
Socket Weld Reducing Coupling 1" × 2" ASTM A105 Class 3000, SW Reducing Coupling, High-Pressure Socket Weld Fitting, Forged Steel Socket Weld Coupling, Boiler Steel Coupling, Pipe Socket Reducer
Information
The 1" × 2" Socket Weld Reducing Coupling ASTM A105 Class 3000 belongs to the group of high-pressure Socket Weld fittings, where the pipe is inserted into the socket before welding. The welded socket creates a strong, leak-tight connection that ensures maximum safety and long service life in high-pressure piping systems.
The Socket Weld (SW) system provides a permanent welded joint and allows easy selection of fittings according to the required pressure rating. Each fitting is permanently marked with its size, material grade, heat number, and pressure class. All Socket Weld fittings are available with a 3.1 material certificate.
Advantages
- No pipe beveling required before welding
- Easy and reliable installation
- Permanent leak-tight welded connection
- Alternative to threaded fittings
- High mechanical strength
- Manufactured according to ANSI B16.11
- Pressure class: Class 3000 (206 bar)
- 3.1 material certificate available on request
Material
ASTM A105 is a forged carbon steel widely used for pressure piping components and Socket Weld fittings. It provides excellent mechanical strength, good machinability, and excellent weldability, making it suitable for ambient and elevated-temperature pressure service.
Typical applications include oil and gas pipelines, petrochemical plants, power stations, pressure vessels, and industrial process systems.
Equivalent or similar material grades include:
- 1.0460
- C22.8
- P245GH
- P265GH
- P285GH
Marking
Each fitting is permanently marked with:
- Size
- Material grade
- Heat number
- Pressure class
- Thread designation (where applicable)
All markings comply with the applicable industry standards.
Applications
Industrial installations, steel mills, marine industry, refineries, boilers, high-pressure piping systems, petrochemical plants, oil & gas industry, and power generation.
We also offer Socket Weld reducing couplings in many other sizes. If you have any questions, please contact us. Call +48 63 261 42 02 or email biuro@polberis.pl.
Learn more about our Socket Weld fittings here >>
Technical data
| Coupling Type | Reducing Coupling |
| Material | Carbon Steel |
| Pressure | Pressure Range 101–250 bar |
| Connection 1 | 2'' |
| Thread Type – Connection 1 | Socket Weld (SW) |
| Connection 2 | 1'' |
| Thread Type – Connection 2 | Socket Weld (SW) |
Related products
Coupling 1''- 1 1/4'' socket weld A105 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Coupling 1''-1 1/2'' socket weld A105 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Coupling 1''- 1 1/2'' socket weld 304 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Tee 1'' socket weld A105 cl.3000
- tee for welding
- size: 1''
- certificate 3.1
Coupling 1" socket weld A105 cl.3000
Tee 1'' socket weld 316L cl.3000
- trójnik do spawania
- stal nierdzewna
- atest 3.1
- pochodzenie: Unia Europejska
Coupling 1" socket weld 304L cl.3000
- mufa do spawania
- atest 3.1
- pochodzenie: Unia Europejska
Coupling 1" socket weld 316L cl.3000
- mufa do spawania
- atest 3.1
- pochodzenie: Unia Europejska
Half coupling 1'' socket weld 304L cl.3000
- półmufa do spawania
- atest 3.1
Union 1/2'' socket weld 304L cl.3000
- material: stainless steel for welding 304L / SS304L
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Cross 1'' socket weld 304L cl.3000
- stainless steel for welding
- atest 3.1
- origin: European union
Cap 1'' socket weld 304L cl.3000
- cap for welding
- stainless steel 304L
- certificate 3.1 (free of charge)
- orgin: European Union
Union 1'' socket weld A105 cl.3000
- śrubunek wysokociśnieniowy do spawania
- atest 3.1
- pochodzenie: Unia Europejska
Union 1'' socket weld 316L cl.3000
- śrubunek do spawania
- do łączenia rur
Tee 1'' socket weld 304L cl.3000
- kształtka do łączenia rur
- atest 3.1
BOSS 1'' socket weld 304 cl.3000
Coupling 1'' - 1/2'' socket weld A350 LF2 cl.3000
Tee 1 1/4''x1'' socket weld 304L cl.3000
- trójnik redukcyjny wysokociśnieniowy 5/4''x1''
- atest 3.1
- pochodzenie: Unia Europejska
Elbow 1" socket weld A105 cl.3000 45 degrees
- łącznik do spawania rur
- atest 3.1
Tee 1'' socket weld P355 LF2 cl.3000
Elbow 1" socket weld A105 cl.6000 90 degrees
Elbow 1" socket weld A105 cl.3000 90 degrees
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Elbow 1'' socket weld P355 LF2 cl.3000 90 degrees
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Tee 2'' socket weld A105 cl.3000
- tee for welding
- size: 2''
- certificate 3.1
Coupling 2" socket weld A105 cl.3000
Union 2'' socket weld A105 cl.3000
- śrubunek wysokociśnieniowy do spawania
- atest 3.1 (bezpłatny)
- pochodzenie: Unia Europejska
Coupling 1 1/2'' -2'' socket weld A105 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Elbow 2" socket weld A105 cl.6000 90 degrees
Elbow 2" socket weld A105 cl.3000 45 degrees
- łącznik do spawania rur
- atest 3.1
Elbow 2" socket weld A105 cl.3000 90 degrees
Coupling 2''- 3'' socket weld A105 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Coupling 1''-1/2'' socket weld A105 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Tee 1 1/4''x1'' socket weld A105 cl.3000
Coupling 1''-3/4'' socket welt A105 cl.3000
- mufa do spawania
- łącznik do spawania rur
- atest 3.1
Reduction tee 1''x3/4'' socket weld A105 cl.3000
- trójnik do spawania rur
- stal kotłowa
- atest 3.1
- pochodzenie: Unia Europejska
Socket Weld Elbow 1" P355 LF2 Class 3000 45°
- 3.1 material certificate available on request (free of charge)
- Origin: European Union
Union 1'' BSP A105 206bar
Cap 1'' BSP A105 206bar
- pressure rating: 3000 lbs (206,9 bar) / 6000 lbs
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Half coupling 1" NPT cl. 3000 A105
Cap 1'' NPT A105 3000lbs
- material: carbon steel
- certificate 3.1 at the request of the customer (free of charge
- origin: European Union
Tee 1'' BSP Class 3000 A105
- Grade: welding steel A105 (P245GH, P280GH)
- High-pressure tee
- Certificate 3.1
THREADOLET 1'' NPT A105 cl. 6000
Coupling 1'' NPT A105 cl.3000
- steel for welding
- certificate 3.1 (free of charge)
- origin: European Union
Coupling 1'' BSP A105 cl.3000
- high pressure coupling
- certificate 3.1
Plug 1'' BSP A105 Class 6000
- Steel plug
- 3.1 material certificate available on request (free of charge)
- Origin: European Union
Tee 1'' NPT cl.3000 A105
- material: steel for welding A105 (P245GH, P280GH)
- pressure class: 3000lbs (206bar)
- certificate 3.1
Hex plug 1" NPT A105 cl.3000
- high-pressure plug
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Reduction nipple 1''x1 1/2'' NPT 206bar A105
- nypel wysokociśnieniowy 1''x5/2''
Reduction nipple 1''x1 1/4'' NPT 206bar A105
Nipple 1'' NPT cl. 3000 A105 fitting
Ball valve 1'' NPT PN100 A105 316
- atest 3.1
Ball Valve 1" BSP GAS PN100 A105/316
- 3.1 material certificate available on request (free of charge)
- Pressure rating: PN100
Nipple union 1'' BSP A105 kl.3000
- śrubunek stalowy
- atest 3.1
- pochodzenie: Unia Europejska
Reduction nipple 1''x2'' NPT 206bar A105
- nypel wysokociśnieniowy 1x2
- atest 3.1
Nipple union 1'' NPT A105 cl.3000
- śrubunek stalowy
- atest 3.1
- pochodzenie: Unia Europejska
Elbow 1'' BSP A105 90 deg. cl.3000
- certificate 3.1
- orgin: European Union
Nipple union 1'' NPT A105 cl.6000
BOSS 1'' A105 cl.3000 B16.11 ASME
Nipple union 1'' NPT A105 206bar external threads
- śrubunek wysokociśnieniowy
- atest 3.1
Lap Joint flange 1'' B16.5 A105 150lbs
COUPLET 1'' threaded NPT A105 cl. 3000
Boss 1'' NPT A105 cl. 3000 B16.11
Male Elbow 1" NPT A105 90° 206 Bar
Flange 1'' SLIP ON B16.5 A105 150lbs
THREADOLET 1''x3'' BSP A105 cl.3000
Reduction coupling 1'' x 1 1/2'' NPT 3000 A105
Coupling 1/2'' x 1'' BSP cl.3000 A105 steel
- gwint standardowy polski BSP (inna nazwa G, Rp, walcowy prosty)
- atest 3.1
- pochodzenie: Unia Europejska
THREADOLET 1''x2''-2 1/2'' BSP A105 cl.3000
Square Head Plug 1'' NPT A105 cl.3000
- high-pressure plug
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Reduction nipple 1/2''x1'' NPT 206bar A105
- nypel wysokociśnieniowy 1/2x1
- atest 3.1
THREADOLET 1''x6''-10'' NPT A105 cl.3000
- odgałęźnik stalowy do spawania
- atest 3.1
Elbow 1" NPT A105 90° Class 3000 206bar
THREADOLET 1''x6''-10'' BSP A105 cl.3000
THREADOLET 1''x4''-5'' BSP A105 cl.3000
Reducing Coupling 2 1/2" × 1" BSP Class 3000 Carbon Steel A105N
- welding sleeve
- 3.1 certificate
- origin: European Union
Reduction WELDOLET XS 1'' x 12'' - 36'' BW A105
1'' x 12'' - 36''
Reduction WELDOLET XS 1'' x 6'' - 10'' BW A105
THREADOLET 1''x3''- 3.1/2'' NPT A105 cl.3000
- odgałęźnik stalowy do spawania
- atest 3.1
Tee 1''x1/2'' socket weld A105 cl.3000
- tee for welding
- size: 3/2''
- certificate 3.1
Reduction coupling 2'' x 1'' NPT 3000 A105
SOCKOLET 1'' x 3''-3 1/2'' SW A105 cl.3000 OUTLET
Elbow 1" DN25 3D XS 4,55 A234 WPB
Elbow 2'' BSP A105 90 deg. cl.3000
- certificate 3.1
- orgin: European Union
Nipple 2'' NPT cl. 3000 A105 fitting
Nipple union 2'' NPT A105 cl.3000
- śrubunek stalowy
- atest 3.1
- pochodzenie: Unia Europejska
Elbow 2" NPT A105 90° Class 3000
Coupling 2" BSPT Carbon Steel A105 Class 3000 (206 bar)
- boiler steel for welding
- BSPT tapered thread (per ISO 7Rc)
- for high pressure up to 206 bar
- 3.1 certificate
Flange 2'' SLIP ON B16.5 A105 150lbs
Lap Joint flange 2'' B16.5 A105 150lbs
Male Elbow 2" NPT A105 90° 206 Bar
Square Head Plug 2" NPT A105 cl.3000
- high-pressure plug
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Elbow 2" NPT A105 45° Class 3000 206bar
THREADOLET 2''x3''-4'' BSP A105 cl.3000
THREADOLET 2''x5''-6'' BSP A105 cl.3000
THREADOLET 2''x8''-10'' BSP A105 cl.3000
Reducing tee 2''x1/2''x2'' NPT A105 cl.3000
- certificate 3.1
- orgin: European Union
THREADOLET 3/4''x2''-2 1/2'' BSP A105 cl.3000
SOCKOLET 3/4'' x 2''-2 1/2'' SW A105 cl.3000 OUTLET
Reduction WELDOLET XS 2'' x 3'' - 4'' BW A105
Reduction WELDOLET XS 2'' x 8'' - 10'' BW A105
Reduction coupling 2'' x 3'' NPT 3000 A105
Reduction tee 2''x1/2''x2'' BSP cl.3000 A105
Reduction tee 2''x1 1/4''x2'' BSP cl.3000 A105
SOCKOLET 2'' x 5''-6'' SW A105 cl.3000 OUTLET
Steel Pipe 2'' 60x4mm P235GH, 100cm
- odcinek: 6000mm
Cap 2'' BSP A105 206bar
- pressure rating: 3000 lbs (206,9 bar) / 6000 lbs
- certificate 3.1 at the request of the customer (free of charge)
- origin: European Union
Half coupling 2" NPT cl. 3000 A105
Union 2'' BSP A105 206bar
Coupling 2'' BSP A105 cl.3000
- high pressure coupling
- certificate 3.1
Nipple 2'' BSP A105 cl.6000
- pressure class: 6000lbs (413 bar)
- atest 3.1
- origin: European union
THREADOLET 1/2''x2''-2 1/2'' BSP A105 cl.3000
SOCKOLET 1/2'' x 2''-2 1/2'' SW A105 cl.3000 OUTLET
Reducing Socket Weld Coupling 2" × 1 1/2" A350 LF2 Class 3000
Tee 1" Socket Weld A105 Class 6000
Tee 2" Socket Weld A105 Class 6000
Half coupling 1" socket weld A105 cl.6000
- półmufa do spawania rur
- atest 3.1
Half coupling 1"x3/4" socket weld A105 cl.6000
- Half-Socket for Pipe Welding
- Certificate 3.1
Socket Weld Coupling 1" ASTM A350 LF2 Class 3000
Union 1'' socket weld P355NH A350 LF2 cl.3000
- śrubunek wysokociśnieniowy do spawania
- atest 3.1 (bezpłatny)
- pochodzenie: Unia Europejska
Tee 2''x1'' socket weld P355 LF2 cl.3000
Sockolet 1'' × 12''–36'' SW A105 Class 3000
Socket Weld Flange 2'' 300LB A105 SW
Half coupling 1" socket weld A105 cl.3000
- Half-Socket for Pipe Welding
- Certificate 3.1
Flange 1'' socket weld 300LB A105 SW
Reduction 1''x1/2'' Insert socket weld A105 3000
Flange 1'' socket weld 150LB A105 SW
Cap 1'' socket weld A105 cl.3000
- cap for welding
- carbon steel A105
- certificate 3.1 (free of charge)
- orgin: European Union
THREADOLET 2''x6'' NPT A105 cl.3000
- odgałęźnik stalowy do spawania
- atest 3.1
Half coupling 2" socket weld A105 cl.6000
- Half-Socket for Pipe Welding
- Certificate 3.1
Blind flange 2'' A105 150lb B16.5
Socket Weld Elbow 2'' 45° A105 Class 6000
- Socket weld fitting for pipe welding
- 3.1 material certificate available on request (free of charge)

