A Professional Supplier of
Stainless Steel Buttweld Fittings
We provides stainless steel butt-welding fittings of material 304, 304L, 316, 316L, 317L, 321, 310S, 347, 347H, 316Ti, 904L, 254 SMO, duplex 2205, Super duplex 2507 etc.
Stainless Steel Butt-weld Fittings
Stainless Steel Buttweld Fittings are defined as a part used in a piping system, for changing direction, branching or for change of pipe diameter, and which is mechanically joined to the system. Buttweld fittings is a butt-welded connected stainless steel pipe fittings, it is easy for installation and maintenance. In fact, we are not only do stainelss steel fittings, as well as alloy steel and special alloys, such as ASTM A234 WP5, WP11, WP12, WP91 etc, and nickel alloy C276, alloy 625, monel 400 etc.
We mainly manufacture and supply stainless steel buttweld fittings according to ASME B16.9, EN10253-4/-3 , including stainless steel elbow, equal/reducing tee, conc/ecc reducer, stainless steel cap, stainless steel stub end etc. We also manufacture and supply stainless steel butt weld fittings to ISO 05251, GOST 17380/17378/17375/17376/17379, JIS etc.
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Standard of Buttwelding Fittings
- ASME/ANSI B16.9
- ASME/ANSI B16.28
- MSS SP-43
- MSS SP-75
- DIN/EN 10253 -3/4
- ISO 5251
- JIS B2311/2312/2313
- GOST 17375/17376/17378/17379
What Materials We Do*:
Stainless Steel
ASTM A403 304/L, 304H 310S, 310H 316/L, 316Ti, 316H 317/L 321/H 347/H S31803 S32750 904L 254SMO (S31254)Duplex & Super Duplex
ASTM A815 UNS S31803, S32205, UNS S32750, S32760Nickel-base Alloy
Alloy 200, Monel 400, K500, Inconel 600, 625, Incoloy 800, 800H, 800HT, 825, alloy 20, alloy28, hastelloy C22, C276 etc.Copper-Nickle Alloy
Cu70Ni30(C71500, B30), Cu90Ni10(C70600,B10)Titanium Alloy
Gr. 1, Gr.2, Gr.11 etc.Carbon Steel
ASTM A234 WPB, WPCLow Temperature Steel
ASTM A420 WPL3, WPL6Alloy Steel
ASTM A234 WP5, WP9, WP11, WP12, WP22, WP91,WP911,WPRHigh Yield Steel
ASTM A860 WPHY42, 46, 50, 52, 56, 60, 65, 70
Capacity:
- Size: 1/2” to 104” for welded and seamless
- SCH5S, SCH10S, SCH40S, STD, SCH80S/XS, SCH100, SCH120, SCH160, SCHXXS
- Connection End: Butt-welded.
| Product | Size* | Wall Thickness** | Seamless | Welded | |||||||||||||||||||||
| Elbow | 1/2″-24″ | SCH10S~XXS | √ | √ | |||||||||||||||||||||
| 8″-104″ | SCH5S~80S/XS | √ | |||||||||||||||||||||||
| Tee | 1/2″-24″ | SCH10S~XXS | √ | √ | |||||||||||||||||||||
| 8″-104″ | SCH5S~80S/XS | √ | |||||||||||||||||||||||
| Reducer | 1/2″-24″ | SCH10S~XXS | √ | √ | |||||||||||||||||||||
| 8″-104″ | SCH5S~80S/XS | √ | |||||||||||||||||||||||
| Cap | 1/2″-80″ | SCH10S~SCH160 | √ | ||||||||||||||||||||||
| Lap Joint Stub End | 1/2″-24″ | SCH5S~80S/XS | √ | √ | |||||||||||||||||||||
| 8″-80″ | SCH5S~80S/XS | √ | |||||||||||||||||||||||
Tolerance For Butt-welding Fittings ASME B16.9
| Nominal Pipe Size | All Fittings | 90°45°Elbows, Tees,Crosses | Reducers, Lap joint stub Ends | Caps | 180° Return Elbows | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Outside Diameter at Bevel | Inside Diameter at Bevel | Thickness | Center-to-End Dinmension,± | Overall Length | Overall Length | Center-to- Center Dimension | Back-to- Face Dimension | Alignment of Ends | ||
| DN | NPS | OD,D1,D2 | NPS | T | A,B,C,M | H,F | E,E1 | O | K | U |
| 15-65 | 1/2-2.1/2 | +1.6,-0.8 | 0.8 | Not less than 87.5% of nominal thickness | 2 | 2 | 3 | 6 | 6 | 1 |
| 80-90 | 3-3.1/2 | 1.6 | 1.6 | 2 | 2 | 3 | 6 | 6 | 1 | |
| 100 | 4 | 1.6 | 1.6 | 2 | 2 | 3 | 6 | 6 | 1 | |
| 125-200 | 5-8 | +2.4,-1.6 | 1.6 | 2 | 2 | 6 | 6 | 6 | 1 | |
| 250-450 | 10-18 | +4.0,-3.2 | 3.2 | 2 | 2 | 6 | 10 | 6 | 2 | |
| 500-600 | 20-24 | +6.4,-4.8 | 4.8 | 2 | 2 | 6 | 10 | 6 | 2 | |
| 650-750 | 26-30 | +6.4,-4.8 | 4.8 | 3 | 5 | 10 | – | – | – | |
| 800-1200 | 32-48 | +6.4,-4.8 | 4.8 | 5 | 5 | 10 | – | – | – | |
| 1300-1500 | 52-60 | +9.5,-6.4 | 6.4 | 9.5 | – | – | – | – | – | |
| 1600-1700 | 64-68 | +12,-9.5 | 9.5 | 12 | – | – | – | – | – | |
| 1800-2000 | 72-80 | +16,-12 | 12 | 16 | – | – | – | – | – | |
Angularity Tolerance of Buttweld Fittings ASME B16.9
| Nominal Size | DN | 15-100 | 125-200 | 250-300 | 350-400 | 450-600 | 650-750 | 800-1050 | 1100-1200 | 1300-1500 | |||||||||||||||
| NPS | 1/2 – 4 | 5-8 | 10-12 | 14-16 | 18-24 | 26-30 | 32-42 | 44-48 | 52-60 | ||||||||||||||||
| Angularity Tolerance | Off Angle | Q | 1 | 2 | 3 | 3 | 4 | 5 | 5 | 5 | 6.4 | ||||||||||||||
| Off Plain | P | 2 | 4 | 5 | 6 | 10 | 10 | 13 | 19 | 20 | |||||||||||||||
*For more information of buttweld fittings, please feel free to contact us.
Inspection
Quality
Our factory are ISO 9001 and PED 2014/68/EU approved manufacturer. We believe that the quality is the life of company. To provide quality product is the things we are doing.
- PMI test to ensure the material quality
- Dimension controlling during fabricating and finished
- 100% Visual and surface examination
- Tensile test per heat
- Intergranular Corrosion test on request
- NDT test of PT, UT, RT
- Other requirement from Clients
Why KAYSUNS
MATERIAL guaranteed
Raw material of stainless steel buttweld fittings are from reputed mill to guarantee the chemical composition and mechanical properties. Material certificate to EN 10204 3.1 / 3.2 will come with the orders.
Package Solutions
We have more than 15 years global experiences to supply stainless steel pipe fittings, not only butt-weld fittings, but also forged fittings, stainless steel flanges, threaded fittings and special fabricated on requirements.
FAST DELIVERY
Small quantity is available from ex-stock for common grade and dimension, fast delivery is possible to meet your needs well timely. We are also can support the transporation and efficient logistics service.
FACOTRY PRICE
Low cost from bulk production will reduce the product budget and improve your business. Buy from stainless steel buttweld fittings manufacturer directly will reduce the cost.
CUSTOMIZED FABRICATED
Customized fabrication to client’s design and sample are available.
THIRD PARTY INSPECTION
Third party inspection from SGS, ABS, BV, Lloyd’s, TUV, DNV, Intertek etc. are available for our product.
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Get In Touch
- RM901 No.22 Tangjiaqiao Road Wenzhou China
- +86 577 8551 1171
- [email protected]
- https://www.kaysuns.com/
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