Customization: | Available |
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After-sales Service: | 24h Onilne Service |
Warranty: | Third Respection |
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Products |
Pipe Fittings, Elbow, bend, equal/reduce tee, concentric/eccentric reducer, cap, flange |
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Size |
Seamless (SMLS) Elbows : 1/2"-24" , DN15-DN600. |
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Butt Welded Elbows (seam) :24"-72", DN600-DN1800. |
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Type |
LR 30,45,60,90,180 degree ; SR 30,45,60,90,180 degree. |
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1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. |
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Thickness |
SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH80., SCH100, SCH120, SCH140, SCH160, XXS. |
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Standard |
ASME B16.9, ASTM A234, ASTM A420, ANSI B16.9/B16.25/B16.28; |
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DIN2605-1/2615/2616/2617; |
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JIS B2311 ,2312,2313; |
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EN 10253-1, EN 10253-2, etc |
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we can also produce according to drawing and standards provided by customers. |
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Material |
ASTM |
Carbon steel (ASTM A234WPB, A234WPC, A420WPL6.) |
Stainless steel (ASTM A403 WP304, 304L, 316, 316L, 321. 1Cr18Ni9Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, ect.) |
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Alloy Steel:A234WP12, A234WP11, A234WP22, A234WP5, A420WPL6, A420WPL3. |
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DIN |
Carbon steel:St37.0,St35.8,St45.8; |
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Stainless steel:1.4301,1.4306,1.4401,1.4571; |
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Alloy steel:1.7335,1.7380,1.0488(1.0566); |
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JIS |
Carbon steel:PG370, PT410; |
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Stainless steel:SUS304, SUS304L, SUS316, SUS316L, SUS321; |
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Alloy steel:PA22, PA23, PA24, PA25, PL380; |
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GB |
10#, 20#, 20G, 23g, 20R, Q235, 16Mn, 16MnR,1Cr5Mo, 12CrMo, 12CrMoG, 12Cr1Mo. |
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Surface |
Transparent oil, rust-proof black oil or hot galvanized. |
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Packing |
In wooded cases or pallets, or as per clients requirements. |
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Applications |
Petroleum, chemical, machinery, boiler, electric power, shipbuilding, papermaking, construction, etc |
TYPE |
ASTM | EN/DIN | JIS |
Austenite Stainless Steel | A182: F304, F304L, F304H, F304N, F304LN F310, F310H, F310MoLN F316, F316L, F316H, F316N, F316LN, F316Ti F317, F317L F321, F321H F347, F347H, F347LN F304/304L, F316/316L, F317/317L, F321/321H. |
1.4301(X5CrNi1810) 1.4306(X2CrNi1911) 1.4301H(X5CrNBi1810H) 1.4311(X2CrNiN1810) 1.4845(X12CrNi2521) 1.4401(X5CrNiMo17122) 1.4404(X2CrNiMo171321) 1.4919(X6CrNiMo1713) 1.4406(X2CrNiMoN17122) 1.4571(X6CrNiMoTi17122) 1.4438(X2CrNIMo18164) 1.4449(X5CrNiMo1713) 1.4541(X6CrNiTi1810) 1.4541H(X6CrNiTi1810H) 1.4550(X6CrNiNb1810) |
SUS304 SUS304H SUS304L SUS310 SUS310S SUS316 SUS316H SUS316L SUS316Ti SUS317 SUS317L SUS321 SUS321H SUS347 SUS347H |
Duplex Steel | A182: F51(UNS S31803) F53(UNS S32750) F55(UNS S32760) F60(UNS S32205) |
1.4462(X2CrNiMoN22-5-3), 1.4410(X2CrNiMoN25-7-4) 1.4501(X2CrNiMoCuWN25-7-4) |
SUS329J3L SUS329J3LTB SUS329J3LTP |
Super Stainless Steel | A182: F904L(UNS N08904) F44(UNS S31254 or 254SMO) |
1.4539(X2NiCrMoCu25-20-5), 1.4547(X2NiCrMoCu20-18-7) |
SUS890L |
Alloy Steel | A182: F1, F12, F11, F22, F5, F9, F91 A336: F1, F11, F12, F5, F6, F9, F21, F22, F91, F911. A694: F42, F46, F48, F50, F52, F56, F60, F65, F70 |
1.5415(15Mo3)/16Mo3 1.7335(13CMo44)/13CrMo4-5 1.7380(10CrMo9-10) 1.7362(12CrMo195) 1.4903/X10CrMoVNb9-1 |
STPA12 STPA22 STPA23 STPA24 STPA25 STPA26 STBA20 STBA25 STBA26 STBA22 STBA23 STBA24 |
Carbon Steel | A105 A181: CL.60, CL.70 |
1.0432(C21)/1.0460(P 250GH) 1.0305 (St35.8) /P235GH(1.0345) 1.0405(St45.8) /P265GH(1.0425) 1.0482(19Mn5) |
STPT370(STPT38) STPT410(STPT42) STPT480(STPT42) |
Low-temperature Steel | A350: LF2, LF3, LF6, LF9 |
1.0566(TStE355/P355QH1(1.0571) 1.5837/1.5637(10Ni14)/12Ni4 1.0488(TSTE285), TSTE355(1.0566) |
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Nonferrous metal: Nickel Alloy | B725: UNS N04400(Monel 400) B516/B517: UNS N06600(Inconel 600) B515/B514: UNS N08800(Incoloy 800) UNS N08810(Incoloy 800H) UNS N08811(Incoloy 800HT) A249: UNS N08800(800) UNS N08810(800H) UNS N08811 UNS N08904 B704: UNS N06625(Inconel 625) UNS N08825(Incoloy 825) B619: UNS N10276(Hastelloy C276) UNS N10665(Hastelloy B2) UNS N06022(Hastelloy C22) UNS N10276(Hastelloy C276) B626: UNS N10276(Hastelloy C276) UNS N10665(Hastelloy B2) UNS N06022(Hastelloy C22) UNS N10276(Hastelloy C276) B464/B468: UNS N08020(Alloy 20) |
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Nonferrous metal: Aluminum Alloy , Titanium Alloy | B247: UNS A93003, UNS A96061 B381: F-1, F-2, F-3, F-7, F-9, F-11 |
3.7025, 3.7035, 3.7235 |
Technology | Forging | |
Size Range | DN 10 - DN 2000 | |
1/2"- 48" | ||
Pressure Ratings | Class | 150#, 300#, 600#, 900#, 1500#, 2500#, etc. |
PN | PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, etc. | |
Sealing Type | FF, RF, RJ, FM, M, T, G, etc. | |
Sealing Finish | Smooth or Spiral Finish (As your request) | |
Materials | Stainless steel | ASTM A182 Gr. F304/304L/316/316L ASTM A403 WP304/304L/316/316L ASTM A351 Gr. CF3/CF8/CF3M/CF8M |
Duplex steel | UNS31803, SAF2205, UNS32205, UNS31500, UNS32750 , UNS32760, 1.4462, 1.4410, 1.4501 and etc. | |
Varieties | PL (Plate Flat), WN (Weld Neck), BL (Blind), SO (Slip-ons), SW (Socket Welds), TH (threaded), LJ/SE(Lapped Flange/Stub ends), PJ/SE, LF/SE, etc. | |
Standard | USA | ASME B16.5, ASME B16.47, MSS SP-44, AWWA C207 |
European Union | EN 1092-1 | |
Britain | BS 4504, BS 10 | |
Australia | AS 2129, AS/NZ 4087, AS 4331 | |
New Zealand | AS/NZ 4087 | |
Russia | GOST 12820, GOST 12815, GOST 12821, GOST 33259 | |
Germany | DIN 2627 - DIN 2638, DIN 2558, DIN 2665 - DIN 2569, DIN 2573, DIN 2576, DIN 2641, etc. | |
Korea | KS B1503 | |
Japan | JIS B2220 | |
South Africa | SABS 1123, SANS 1123 | |
ISO | ISO 7005-1 | |
Package | PE film + Plywood case | |
Trade Terms | EXW, FOB, CFR, CIF, etc. | |
Payment Terms | T/T, L/C, CAD, Credit Card | |
Delivery Time | Within 20 days for massive quantity Within 7 days for stock products |
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Application | Petrochemical & Gas industry, chemical, machinery, electric power, shipbuilding, papermaking, construction Water works, Shipbuilding industry, Power industry, Valve industry,and general pipes connecting projects etc. |
Butt-welding (BW) pipe fittings are components used to connect pipes in piping systems by welding the fitting directly to the pipe. They are widely used in high-pressure and high-temperature applications due to their strength, leak-proof nature, and durability. Below is an introduction to common types of butt-welding pipe fittings:
- Purpose: Changes the direction of flow in a piping system.
- Types:
- 90° Elbow: Changes direction by 90 degrees.
- 45° Elbow: Changes direction by 45 degrees.
- 180° Elbow (Return Bend): Reverses flow direction completely.
- Materials: Carbon steel, stainless steel, alloy steel, duplex steel, etc.
- Ends: Beveled ends for welding.
- Purpose: Combines or splits fluid flow in a piping system.
- Types:
- Equal Tee: All three ends are the same size.
- Reducing Tee: One branch is smaller than the main run.
- Applications: Used in pipelines where flow diversion is needed.
- Purpose: Connects pipes of different diameters.
- Types:
- Concentric Reducer: Aligns the centerlines of both pipes (used in vertical lines).
- Eccentric Reducer: Offsets one side (used to avoid air pockets in horizontal lines).
- Applications: Pump inlets, pipe size transitions.
- Purpose: Seals the end of a pipe, terminating flow.
- Features:
- Hemispherical or flat design.
- Used for pressure testing or future expansion.
- Purpose: Used with lap joint flanges for easy disassembly.
- Features:
- One end is beveled for welding to the pipe, the other has a flared face to match the lap joint flange.
- Common in systems requiring frequent maintenance.
- Purpose: Allows flow in four directions (rarely used due to high stress).
- Applications: Specialized industrial piping systems.
- Purpose: Connects pipes but is less common due to welding requirements.
- Alternative: Flanged connections are preferred for disassembly.
High Strength & Leak-proof - No weak points like threads.
Smooth Flow - No internal obstructions.
Suitable for High-Pressure/Temperature - Ideal for oil & gas, chemical plants, power plants.
Long Service Life - Less prone to corrosion at joints.
- ASME B16.9 (Factory-made wrought butt-welding fittings).
- ASME B16.28 (Wrought steel butt-welding short radius elbows).
- MSS SP-43 (Lightweight stainless steel fittings).
- ASTM/ANSI/API Standards (Material-specific requirements).
- Carbon Steel (ASTM A234 WPB)
- Stainless Steel (ASTM A403 WP304/316)
- Alloy Steel (ASTM A234 WP5/WP9/WP11)
- Duplex & Super Duplex (ASTM A790/A928)
- Oil & Gas Pipelines
- Chemical & Petrochemical Plants
- Power Generation (Steam & Water Lines)
- Shipbuilding & Offshore Platforms
- HVAC & Water Treatment Systems
Butt-welding fittings are preferred in critical applications due to their reliability and structural integrity. Proper welding techniques (e.g., TIG, MIG, or SMAW) and post-weld heat treatment (PWHT) ensure optimal performance.
Butt-welding (BW) pipe fittings must adhere to strict international standards to ensure quality, dimensional consistency, and material integrity. Below are the most widely recognized standards governing their production:
a) ASME B16.9
- Scope: Covers factory-made wrought carbon/alloy steel butt-welding fittings (elbows, tees, reducers, caps, etc.).
- Key Requirements:
- Dimensions, tolerances, and pressure ratings.
- Materials: Carbon steel (A234 WPB), stainless steel (A403), alloy steel (A234 WP5-WP91).
- Common Applications: Oil & gas, power plants, chemical industries.
b) ASME B16.25
- Scope: Standardizes welding end preparations (bevel design) for butt-welding fittings.
- Key Requirements:
- Bevel angles, root face, and groove dimensions for seamless welding.
c) ASME B16.28
- Scope: Covers short-radius elbows (wrought steel) for tight spaces.
- Pressure Ratings: Matches ASME B16.9 but with a smaller bend radius.
a) MSS SP-43
- Scope: Lightweight stainless steel butt-welding fittings (similar to ASME B16.9 but with thinner walls).
- Applications: Low-pressure systems (e.g., food processing, water treatment).
b) MSS SP-75
- Scope: High-strength wrought carbon/alloy steel fittings for high-pressure applications.
- Materials: ASTM A860 (e.g., WPHY 42, 52, 60, 65, 70).
c) MSS SP-73
- Scope: Brazing and socket-welding fittings (less common for BW but referenced for hybrid systems).
a) ASTM A234
- Scope: Carbon/alloy steel pipe fittings (e.g., WPB, WP5, WP9, WP11).
- Grades: Vary by temperature/pressure resistance.
b) ASTM A403
- Scope: Stainless steel fittings (e.g., WP304, WP316, WP321).
- Sub-types:
- WP (Wrought Product): Standard fittings.
- CR (Corrosion Resistant): For aggressive environments.
c) ASTM A420
- Scope: Low-temperature carbon steel fittings (e.g., WPL6 for -46°C/-50°F service).
a) EN 10253
- Scope: Butt-welding fittings for carbon/alloy steel (Part 1-4).
- Key Differences vs. ASME:
- EN 10253-1: Non-alloy steel fittings.
- EN 10253-2: Alloy steel with inspection/testing requirements.
- EN 10253-3/4: Stainless steel fittings.
b) EN 1092
- Scope: Flanges (complementary to BW fittings).
a) ISO 3419
- Scope: Non-alloy and alloy steel butt-welding fittings (similar to ASME B16.9).
b) ISO 5251
- Scope: Stainless steel BW fittings (equivalent to ASTM A403).
a) JIS B2311
- Scope: Carbon/alloy steel butt-welding fittings.
- Grades: Similar to ASTM/ASME but with local material codes (e.g., JIS G3454).
a) GOST 17375
- Scope: Steel BW elbows, tees, reducers (common in CIS countries).
- Pressure Classes: PN6 to PN100.
1. Material Compatibility: Match ASTM/EN grades to fluid/service conditions.
2. Dimensional Compliance: ASME B16.9 vs. EN 10253 (slight size differences).
3. Pressure Ratings: Align with ASME B16.5 (flanges) or EN 1092.
4. Certifications:
- PED 2014/68/EU (Europe).
- NACE MR0175 (H2S service).
- NORSOK (L-150) for offshore.
| Feature | ASME B16.9 | EN 10253 |
| Scope | Factory-made fittings | Carbon/stainless steel |
| Pressure | Class 150-2500 | PN2.5-PN100 |
| Materials | ASTM A234/A403 | P235GH, 316L, etc. |
| Testing | Hydrostatic optional | Mandatory for EN 10253-2/4 |
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Business Type: | Manufacturer/Factory | |
Main Products: | Carbon Steel Pipe , Stainless Steel Pipe , Copper Nickel Tube , Heat Exchanger Tube , Boiler ... | |
Registered Capital: | 2000000 RMB | |
Plant Area: | >2000 square meters | |
Management System Certification: | ISO 9001, ISO 14001, OHSAS/ OHSMS 18001, ANSI/ESD | |
Average Lead Time: | Peak Season Lead Time: 1-3 months Off Season Lead Time: within 15 workdays |
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