Stainless Steel Pipe Cap
SS 304 Butt Weld Cap is a stainless steel pipe fittings which butt weld onto the exterior of a pipe to block off the end of pipeline system. The original material is stainless steel 304 plate. It could be seamless and welded depending on the diameter. Usually the larger diameter cap is weld. The normal size is seamless.
Pipe cap use steel plate as the starting material and are forged to get the shape, and it is more common in stainless steel. The end will be beveled for welding easily. It offers more robust connection and strength of the piping system. It’s usage and application is very extensive since butt weld end cap’s size range is wide from 1/2” to 48” with schedules.
Stainless Steel Butt Weld Cap Price
Butt Weld CAP SS 304 FOB PRICE $ | |||||||
---|---|---|---|---|---|---|---|
DN | NPS | 10S | 20 | STH | 40 | XS | 80 |
15 | 1/2 | 0.2 | 0.3 | 0.3 | 0.5 | 0.5 | |
20 | 3/4 | 0.3 | 0.4 | 0.4 | 0.6 | 0.6 | |
25 | 1 | 0.7 | 1 | 1 | 1.2 | 1.2 | |
32 | 1 1/4 | 1 | 1.2 | 1.2 | 1.8 | 1.8 | |
40 | 1 1/2 | 1.1 | 1.5 | 1.5 | 2 | 2 | |
50 | 2 | 1.4 | 2 | 2 | 3 | 3 | |
65 | 2 1/2 | 1.8 | 3 | 3 | 4.5 | 4.5 | |
80 | 3 | 3 | 5 | 5 | 8 | 8 | |
90 | 3 1/2 | 4 | 8 | 8 | 11.5 | 11.5 | |
100 | 4 | 4.6 | 9 | 9 | 13.5 | 13.5 | |
125 | 5 | 8 | 15 | 15 | 23 | 23 | |
150 | 6 | 10.8 | 24 | 24 | 35 | 35 | |
200 | 8 | 19 | 32 | 40 | 40 | 62 | 62 |
250 | 10 | 32 | 49 | 71 | 71 | 99 | 133 |
300 | 12 | 50 | 76 | 105 | 115 | 141 | 222 |
350 | 14 | 60 | 110 | 133 | 160 | 175 | 300 |
400 | 16 | 65 | 137 | 167 | 203 | 217 | 410 |
450 | 18 | 69 | 173 | 213 | 335 | 279 | 600 |
500 | 20 | 95 | 257 | 257 | 425 | 339 | 805 |
550 | 22 | 133 | 300 | 300 | 399 | 912 | |
600 | 24 | 175 | 362 | 362 | 722 | 479 | 1375 |
650 | 26 | 521 | 387 | 520 | |||
700 | 28 | 585 | 445 | 585 | |||
750 | 30 | 400 | 646 | 486 | 646 | ||
800 | 32 | 730 | 570 | 988 | 730 | ||
850 | 34 | 828 | 623 | 1140 | 828 | ||
900 | 36 | 912 | 692 | 1353 | 912 | ||
950 | 38 | 99 | 988 | ||||
1000 | 40 | 106 | 1080 | ||||
1050 | 42 | 115 | 1140 | ||||
1100 | 44 | 132 | 1307 | ||||
1150 | 46 | 140 | 1413 | ||||
1200 | 48 | 152 | 1512 |
Butt Weld Cap Application
While 304 butt weld cap is widely used in the fields of chemical, oil mills, petrochemical, mining, fertilizers, shipbuilding, power plant, steel plant, oil & gas, paper, ports, cement and engineering.
Advantages of Buttweld End Cap
- Offer permanent leak proof
- Reduce pressure losses
- Adds strength and power to the piping structure
- Deliver a framework that uses atleast space
A403 WP304/304L Cap Chemical & Tensile
Type 304/304L stainless steel is a T 300 Series Stainless Steel austenitic. It has a minimum of 18% chromium and 8% nickel, combined with a maximum of 0.08% carbon. It is a Chromium-Nickel austenitic alloy.
As American AISI basic grades, the practical difference between 304 and 304L is carbon content only. They have carbon ranges of 0.07% maximum and 0.030% maximum respectively. The lower carbon content in 304L minimizes deleterious carbide precipitation as a result of welding.
However, 304L is common practice to be dual certified as 304 and 304L.
Carbon is a negative element in stainless steel, so the less carbon there is, the better the quality of stainless steel, and the more expensive the price.
So Stainless Steel 304 butt weld cap is an economical and versatile corrosion resistant cap suitable for a wide range of general purpose applications. It can offer permanent leak proof, add strength and power to the piping structure, reduce pressure losses.
304/304L Cap Chemical Composition
Composition | SS304
Chemical % |
SS304L
Chemical % |
---|---|---|
Carbon | 0.08 Max | 0.03 Max |
Chromium | 18.00-20.00 | 18.00-20.00 |
Manganese | 2.00 Max | 2.00 Max |
Nickel | 8.00-12.00 | 8.00-12.00 |
Nitrogen | 0.10 Max | 0.10 Max |
Phosphorus | 0.045 Max | 0.045 Max |
Silicon | 0.75 Max | 0.75 Max |
Sulfur | 0.030 Max | 0.030 Max |
304/304L Cap Tensile Test
Type | Tensile Strength | Yield Strength | Elongation | Hardness | |
---|---|---|---|---|---|
(Mpa) | (Mpa) | HBW | HRB | ||
304 | ≥515 | ≥205 | ≥40 | ≥201 | ≥92 |
304L | ≥485 | ≥170 | ≥40 | ≥201 | ≥92 |
SS 316 Pipe Cap BW End
SS 316 is higher grade than SS 304 butt weld cap. The molybdenum makes 316 better overall corrosion resistant properties than 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. SS 316 Cap can be used in more areas and be the first choice according to the high demand.
ASME B16.9 Fittings Standard
ASTM A403 is stainless steel butt weld fittings material standard and ASME B16.9 is manufacture standard. But for low pressure corrosion resistant butt welding fittings, it is MSS SP-43 standard. ASTM A403 Standard specification covers the standard for wrought authenticate Stainless Steel pipe fittings for pressure piping applications.
Stainless Steel Fittings Document/Certificate
Zizi Engineering is 304 butt weld cap manufacturer and supplier and carries an extensive inventory. Clients are satisfied with our products quality assurance and good price. The mostly important is the documents and certificates for stainless steel pipe cap.
- Commercial Invoice consisting HS code
- Packing List with package details
- Material Examination
- Certificate of Origin
- Raw Material Test Reports
- Mill Test Certificates
- Solution Heat Treatment
- NDT Report
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