What is Stainless steel buttweld swage nipples ?
Stainless steel buttweld swage nipples are fittings used to connect two different sizes of pipes or to reduce the diameter of a pipe. They have a buttweld connection on one end and a threaded or plain end on the other. They are made of high-quality stainless steel, which makes them resistant to corrosion and suitable for use in harsh environments. They come in different sizes and finishes to suit different piping applications.
Stainless steel buttweld swage nipples are commonly used in industries such as oil and gas, 化学加工, 和水处理. They are ideal for applications that require high pressure and high temperature. Their design allows for easy installation and removal, making them ideal for maintenance and repair work.
全面的, stainless steel buttweld swage nipples are a reliable and durable option for connecting and reducing pipes in various piping applications.
Specifications of ASME B16.9 Buttweld Swage Nipples
尺寸 | 1/8″ to 8″, (DN8 TO DN200) |
标准 | 美标/美国机械工程师协会 :ASTM A403 / ASME SA403, ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43.DIN : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011,在 : EN10253-1, EN10253-2 |
方面 | ASME/ANSI B16.9, MSS-SP-43 A型, MSS-SP-43 B型, JIS B2312, JIS B2313, ASME B16.28 |
厚度 | 附表5S, 10S, 20S, S10, S20, S30, 性病, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS等. |
弯曲半径 | R=1D – 10D, 15D, 20D |
从 | Concentric Swage Nipple, Eccentric Swage Nipple |
成绩&材料 | ASTM A403 WP 组. 304, 304L, 304H, 310, 316, 316L, 316H, 316的, 317L, 321, 347, 904L,ASTM A234 WPB, 工作带宽, 世界物理研究所 70, 世界物理研究所 65, 世界物理研究所 60, 世界物理研究所 52, 世界物理研究所 46, & WPHY 42.ASTM A420 WPL6, ASTM A420 WPL3,美国材料试验协会 / ASME有限公司 234 组. WP1, WP5, WP9, WP11, WP12, WP22, WP91,ASTM A815, ASME SA815 UNS 编号 S31803, UNS 编号 S32205, 美国S32750, UNS S32950. 材料编号. 1.4462,我们 10276 (哈氏合金C 276), 我们 6625 (铬镍铁合金 625), 我们 6601 (铬镍铁合金 601), 我们 6600 (铬镍铁合金 600), 我们 8825 (铬镍铁合金 825), 我们 8020 (合金 20 / 20 CB 3), 我们 4400 (蒙乃尔合金 400), 我们 2201 (镍 201), 美国材料试验协会 / 美国机械工程师学会SB 336 我们 2200 (镍 200) |
类型 | 对焊 (体重) |
Buttweld Swedge Nipple Manufacturing Standards
ASME标准 | ASME/ANSI B16.9, ASME/ANSI B16.28, MSS-SP-43 |
DIN标准 | DIN28011, DIN2617, DIN2616, DIN2615, DIN2605 |
标准 | EN10253-2, EN10253-1 |
ASME B16.25 | 对焊端头 |
ASME B16.9 | 工厂制造的锻制管件对焊 |
ASME B16.28 | 锻钢偏心异径管 |
ASTM A403 – ASME SA403 | 锻制奥氏体不锈钢管道配件标准规范 |
MSS SP-43 | 锻 & 低压装配式对焊管件, 耐腐蚀应用 |
Buttweld Swedge Nipple Materials and Grades
Stainless Steel Buttweld Swedge Nipple |
ASTM A403 WP 组. 304, 304L, 304H, 310, 316, 316L, 316H, 316的, 317L, 321, 347, 904L |
Carbon Steel Buttweld Swedge Nipple |
ASTM A234 WPB, 工作带宽, 世界物理研究所 70, 世界物理研究所 65, 世界物理研究所 60, 世界物理研究所 52, 世界物理研究所 46, & 世界物理研究所 42. |
Low Temperature Buttweld Swedge Nipple |
ASTM A420 WPL6, ASTM A420 WPL3 |
Alloy Steel Buttweld Swedge Nipple |
美国材料试验协会 / ASME有限公司 234 组. WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
复式 & Super Duplex Steel Buttweld Swedge Nipple |
ASTM A815, ASME SA815 UNS 编号 S31803, UNS 编号 S32205, 美国S32750, UNS S32950. 材料编号. 1.4462 |
Nickel Alloy Buttweld Swedge Nipple |
我们 10276 (哈氏合金C 276), 我们 6625 (铬镍铁合金 625), 我们 6601 (铬镍铁合金 601), 我们 6600 (铬镍铁合金 600), 我们 8825 (铬镍铁合金 825), 我们 8020 (合金 20 / 20 CB 3), 我们 4400 (蒙乃尔合金 400), 我们 2201 (镍 201), 美国材料试验协会 / 美国机械工程师学会SB 336 我们 2200 (镍 200) |
SWAGE NIPPLE DIMENSIONS :
Seamless Swage Nipples
I.D. or Nominal Size | 外径 | 长度 | ||
NU | EUE | NU | EUE | |
1/8 | — | — | — | — |
1/4 | .540 | — | 2 1/4 | — |
3/8 | .675 | — | 2 1/2 | — |
1/2 | .840 | — | 2 3/4 | — |
3/4 | 1.050 | — | 3 | — |
1 | 1.315 | 1.469 | 3 1/2 | 4 1/2 |
1 1/4 | 1.660 | 1.812 | 4 | 6 |
1 1/2 | 1.900 | 2.094 | 4 1/2 | 6 |
2 | 2.375 | 2.594 | 6 1/2 | 8 |
2 1/2 | 2.875 | 3.094 | 7 | 8 |
3 | 3.500 | 3.750 | 8 | 8 |
3 1/2 | 4.000 | 4.250 | 8 | 8 |
4 | 4.500 | 4.750 | 9 | 9 |
ASME B16.9 Butt weld Swedge Nipple Dimensions
公称管道尺寸 (核动力源) | 外径 | End To End “A” | 室壁厚度 | ||||||||
Large End D1 | Small End D2 | T1 | T2 | ||||||||
Sch40 (性病) | Sch80 (XS) | Sch160 | XXS | Sch40 (性病) | Sch80 (XS) | Sch160 | XXS | ||||
1/4”x1/8” | 13.7 | 10.3 | 57 | 2.2 | 3.0 | 3.7 | 6.1 | 1.7 | 2.4 | ||
3/8”x1/8” | 17.1 | 10.3 | 64 | 2.3 | 3.2 | 4.0 | 6.4 | 1.7 | 2.4 | ||
3/8”x1/4” | 17.1 | 13.7 | 64 | 2.3 | 3.2 | 4.0 | 6.4 | 2.2 | 3.0 | ||
1/2”x1/8” | 21.3 | 10.3 | 70 | 2.8 | 3.7 | 4.8 | 7.5 | 1.7 | 2.4 | ||
1/2”x1/4” | 21.3 | 13.7 | 70 | 2.8 | 3.7 | 4.8 | 7.5 | 2.2 | 3.0 | ||
1/2”x3/8” | 21.3 | 17.1 | 70 | 2.8 | 3.7 | 4.8 | 7.5 | 2.3 | 3.2 | ||
3/4”x1/8” | 26.7 | 10.3 | 76 | 2.9 | 3.9 | 5.6 | 7.8 | 1.7 | 2.4 | ||
3/4’x1/4” | 26.7 | 13.7 | 76 | 2.9 | 3.9 | 5.6 | 7.8 | 2.2 | 3.0 | ||
3/4”x3/8” | 26.7 | 17.1 | 76 | 2.9 | 3.9 | 5.6 | 7.8 | 2.3 | 3.2 | ||
3/4”x1/2” | 26.7 | 21.3 | 76 | 2.9 | 3.9 | 5.6 | 7.8 | 2.8 | 3.7 | 4.8 | 7.5 |
1”x1/8” | 33.4 | 10.3 | 89 | 3.4 | 4.5 | 6.4 | 9.1 | 1.7 | 2.4 | ||
1”x1/4” | 33.4 | 13.7 | 89 | 3.4 | 4.5 | 6.4 | 9.1 | 2.2 | 3.0 | ||
1”x3/8” | 33.4 | 17.1 | 89 | 3.4 | 4.5 | 6.4 | 9.1 | 2.3 | 3.2 | ||
1”x1/2” | 33.4 | 21.3 | 89 | 3.4 | 4.5 | 6.4 | 9.1 | 2.8 | 3.7 | 4.8 | 7.5 |
1”x3/4” | 33.4 | 26.7 | 89 | 3.4 | 4.5 | 6.4 | 9.1 | 2.9 | 3.9 | 5.6 | 7.8 |
1-1/4”x1/8” | 42.2 | 10.3 | 102 | 3.6 | 4.9 | 6.4 | 9.7 | 1.7 | 2.4 | ||
1-1/4”x1/4” | 42.2 | 13.7 | 102 | 3.6 | 4.9 | 6.4 | 9.7 | 2.2 | 3.0 | ||
1-1/4”x3/8” | 42.2 | 17.1 | 102 | 3.6 | 4.9 | 6.4 | 9.7 | 2.3 | 3.2 | ||
1-1/4”x1/2” | 42.2 | 21.3 | 102 | 3.6 | 4.9 | 6.4 | 9.7 | 2.8 | 3.7 | 4.8 | 7.5 |
1-1/4”x3/4” | 42.2 | 26.7 | 102 | 3.6 | 4.9 | 6.4 | 9.7 | 2.9 | 3.9 | 5.6 | 7.8 |
1-1/4”x1” | 42.2 | 33.4 | 102 | 3.6 | 4.9 | 6.4 | 9.7 | 3.4 | 4.5 | 6.4 | 9.1 |
1-1/2”x1/8” | 48.3 | 10.3 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 1.7 | 2.4 | ||
1-1/2”x1/4” | 48.3 | 13.7 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 2.2 | 3.0 | ||
1-1/2”x3/8” | 48.3 | 17.1 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 2.3 | 3.2 | ||
1-1/2”x1/2” | 48.3 | 21.3 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 2.8 | 3.7 | 4.8 | 7.5 |
1-1/2”x3/4” | 48.3 | 26.7 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 2.9 | 3.9 | 5.6 | 7.8 |
1-1/2”x1” | 48.3 | 33.4 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 3.4 | 4.5 | 6.4 | 9.1 |
1-1/2”x1-1/4” | 48.3 | 42.2 | 114 | 3.7 | 5.1 | 7.1 | 10.2 | 3.6 | 4.9 | 6.4 | 9.7 |
2”x1/8” | 60.3 | 10.3 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 1.7 | 2.4 | ||
2”x1/4” | 60.3 | 13.7 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 2.2 | 3.0 | ||
2”x3/8” | 60.3 | 17.1 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 2.3 | 3.2 | ||
2”x1/2” | 60.3 | 21.3 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 2.8 | 3.7 | 4.8 | 7.5 |
Concentric Swage Nipple Dimensions
核动力源 | 外径. | End To End “A” | Thickness Of Wall | ||||||||
Large End D1 | Small End D2 | T1 | T2 | ||||||||
日程 40 (性病) | 日程 80 (XS) | 日程 160 | XXS | 日程 40 (性病) | 日程 80 (XS) | 日程 160 | XXS | ||||
2”x3/4” | 60.3 | 26.7 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 2.9 | 3.9 | 5.6 | 7.8 |
2”x1” | 60.3 | 33.4 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 3.4 | 4.5 | 6.4 | 9.1 |
2”x1-1/4” | 60.3 | 42.2 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 3.6 | 4.9 | 6.4 | 9.7 |
2”x1-1/2” | 60.3 | 48.3 | 165 | 3.9 | 5.5 | 8.7 | 11.1 | 3.7 | 5.1 | 7.1 | 10.2 |
2-1/2”x1/8” | 73.0 | 10.3 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 1.7 | 2.4 | ||
2-1/2”x1/4” | 73.0 | 13.7 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 2.2 | 3.0 | ||
2-1/2”x3/8” | 73.0 | 17.1 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 2.3 | 3.2 | ||
2-1/2”x1/2” | 73.0 | 21.3 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 2.8 | 3.7 | 4.8 | 7.5 |
2-1/2”x3/4” | 73.0 | 26.7 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 2.9 | 3.9 | 5.6 | 7.8 |
2-1/2”x1” | 73.0 | 33.4 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 3.4 | 4.5 | 6.4 | 9.1 |
2-1/2”x1-1/4” | 73.0 | 42.2 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 3.6 | 4.9 | 6.4 | 9.7 |
2-1/2”x1-1/2” | 73.0 | 48.3 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 3.7 | 5.1 | 7.1 | 10.2 |
2-1/2”x2” | 73.0 | 60.3 | 178 | 5.2 | 7.0 | 9.5 | 14.0 | 3.9 | 5.5 | 8.7 | 11.1 |
3”x1/8” | 88.9 | 10.3 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 1.7 | 2.4 | 3.2 | 4.8 |
3”x1/4” | 88.9 | 13.7 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 2.2 | 3.0 | 3.7 | 6.1 |
3”x3/8” | 88.9 | 17.1 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 2.3 | 3.2 | 4.0 | 6.4 |
3”x1/2” | 88.9 | 21.3 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 2.8 | 3.7 | 4.8 | 7.5 |
3”x3/4” | 88.9 | 26.7 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 2.9 | 3.9 | 5.6 | 7.8 |
3”x1” | 88.9 | 33.4 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 3.4 | 4.5 | 6.4 | 9.1 |
3”x1-1/4” | 88.9 | 42.2 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 3.6 | 4.9 | 6.4 | 9.7 |
3”x1-1/2” | 88.9 | 48.3 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 3.7 | 5.1 | 7.1 | 10.2 |
3”x2” | 88.9 | 60.3 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 3.9 | 5.5 | 8.7 | 11.1 |
3”x2-1/2” | 88.9 | 73.0 | 203 | 5.5 | 7.6 | 11.1 | 15.2 | 5.2 | 7.0 | 9.5 | 14.0 |
3-1/2”x1/8” | 101.6 | 10.3 | 203 | 5.7 | 8.1 | 1.7 | 2.4 | ||||
3-1/2”x1/4” | 101.6 | 13.7 | 203 | 5.7 | 8.1 | 2.2 | 3.0 | ||||
3-1/2”x3/8” | 101.6 | 17.1 | 203 | 5.7 | 8.1 | 2.3 | 3.2 | ||||
3-1/2”x1/2” | 101.6 | 21.3 | 203 | 5.7 | 8.1 | 2.8 | 3.7 | 4.8 | 7.5 | ||
3-1/2”x3/4” | 101.6 | 26.7 | 203 | 5.7 | 8.1 | 2.9 | 3.9 | 5.6 | 7.8 | ||
3-1/2”x1” | 101.6 | 33.4 | 203 | 5.7 | 8.1 | 3.4 | 4.5 | 6.4 | 9.1 | ||
3-1/2”x1-1/4” | 101.6 | 42.2 | 203 | 5.7 | 8.1 | 3.6 | 4.9 | 6.4 | 9.7 |
ANSI B16.11 Forged Threaded Swage Nipple belongs to the standard with a maximum of 4 inches of diameter. Different material made fittings such as the ASTM A182 SS Threaded Swage Nipples can be found in the market.
Eccentric Swage Nipple Dimensions
核动力源 | 外径. | End To End “A” |
Thickness Of Wall | ||||||||
Large End D1 | Small End D2 | T1 | T2 | ||||||||
日程 40 (性病) | 日程 80 (XS) | 日程 160 | XXS | 日程 40 (性病) | 日程 80 (XS) | 日程 160 | XXS | ||||
3-1/2”x1-1/2” | 101.6 | 48.3 | 203 | 5.7 | 8.1 | 3.7 | 5.1 | 7.1 | 10.2 | ||
3-1/2”x2” | 101.6 | 60.3 | 203 | 5.7 | 8.1 | 3.9 | 5.5 | 8.7 | 11.1 | ||
3-1/2”x2-1/2” | 101.6 | 73.0 | 203 | 5.7 | 8.1 | 5.2 | 7.0 | 9.5 | 14.0 | ||
3-1/2”x3” | 101.6 | 88.9 | 203 | 5.7 | 8.1 | 5.5 | 7.6 | 11.1 | 15.2 | ||
4”x1/4” | 114.3 | 13.7 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 2.2 | 3.0 | ||
4”x3/8” | 114.3 | 17.1 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 2.3 | 3.2 | ||
4”x1/2” | 114.3 | 21.3 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 2.8 | 3.7 | 4.8 | 7.5 |
4”x3/4” | 114.3 | 26.7 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 2.9 | 3.9 | 5.6 | 7.8 |
4”x1” | 114.3 | 33.4 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 3.4 | 4.5 | 6.4 | 9.1 |
4”x1-1/4” | 114.3 | 42.2 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 3.6 | 4.9 | 6.4 | 9.7 |
4”x1-1/2” | 114.3 | 48.3 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 3.7 | 5.1 | 7.1 | 10.2 |
4”x2” | 114.3 | 60.3 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 3.9 | 5.5 | 8.7 | 11.1 |
4”x2-1/2” | 114.3 | 73.0 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 5.2 | 7.0 | 9.5 | 14.0 |
4”x3” | 114.3 | 88.9 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 5.5 | 7.6 | 11.1 | 15.2 |
4”x3-1/2” | 114.3 | 101.6 | 229 | 6.0 | 8.6 | 13.5 | 17.1 | 5.7 | 8.1 |
ASME B16.9 Swedge Nipple Dimensional Tolerance
Dimensional Tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.
MSS SP-43 solely covers stainless steel butt weld fittings created to be used with Schedule 5S and 10S Swedge Nipple appropriate to be used with Schedule 40S pipe, as outlined in ASME B36.19. The scale and dimensional tolerances outlined in MSS SP-43 area unit considerably a similar as those in ASME B16.9 specifications from NPS 1/2 — NPS twenty-four. Except with relation to the skin diameter at the bevel.
公称管道尺寸 (英寸) | 总长度 (毫米) | Outside Diameter at End | 室壁厚度 (prior to threading or grooving) | |
Square Cut Ends (毫米) | Other End Connection (毫米) | |||
1/8” to 3/8” | ± 1.5 | + 0.40 – 0.80 |
± 0.80 | 不少于 87.5% of nominal wall thickness |
1/2” to 1-1/2” | ± 1.5 | + 0.40 – 0.80 |
+ 1.50 – 0.80 |
|
2” to 2-1/2” | ± 3.0 | ± 0.80 | + 1.50 – 0.80 |
|
3” to 4” | ± 3.0 | ± 0.80 | ± 1.50 |
ASME B16.9 Buttweld Swedge Nipple Weight Chart
尺寸 | 室壁厚度 | |||||||
T1 | T2 | |||||||
Sch40 (性病) | Sch80 (XS) | Sch160 | XXS | Sch40 (性病) | Sch80 (XS) | Sch160 | XXS | |
3-1/2”x1-1/2” | 5.7 | 8.1 | 3.7 | 5.1 | 7.1 | 10.2 | ||
3-1/2”x2” | 5.7 | 8.1 | 3.9 | 5.5 | 8.7 | 11.1 | ||
3-1/2”x2-1/2” | 5.7 | 8.1 | 5.2 | 7.0 | 9.5 | 14.0 | ||
3-1/2”x3” | 5.7 | 8.1 | 5.5 | 7.6 | 11.1 | 15.2 | ||
4”x1/4” | 6.0 | 8.6 | 13.5 | 17.1 | 2.2 | 3.0 | ||
4”x3/8” | 6.0 | 8.6 | 13.5 | 17.1 | 2.3 | 3.2 | ||
4”x1/2” | 6.0 | 8.6 | 13.5 | 17.1 | 2.8 | 3.7 | 4.8 | 7.5 |
4”x3/4” | 6.0 | 8.6 | 13.5 | 17.1 | 2.9 | 3.9 | 5.6 | 7.8 |
4”x1” | 6.0 | 8.6 | 13.5 | 17.1 | 3.4 | 4.5 | 6.4 | 9.1 |
4”x1-1/4” | 6.0 | 8.6 | 13.5 | 17.1 | 3.6 | 4.9 | 6.4 | 9.7 |
4”x1-1/2” | 6.0 | 8.6 | 13.5 | 17.1 | 3.7 | 5.1 | 7.1 | 10.2 |
4”x2” | 6.0 | 8.6 | 13.5 | 17.1 | 3.9 | 5.5 | 8.7 | 11.1 |
4”x2-1/2” | 6.0 | 8.6 | 13.5 | 17.1 | 5.2 | 7.0 | 9.5 | 14.0 |
4”x3” | 6.0 | 8.6 | 13.5 | 17.1 | 5.5 | 7.6 | 11.1 | 15.2 |
4”x3-1/2” | 6.0 | 8.6 | 13.5 | 17.1 | 5.7 | 8.1 |
ASME B16.9 SS Swedge Nipple Angularity Tolerance
ND | 最大偏角 | 最大离机距离 |
问 | 磷 | |
1/2 A 4 | 1 | 2 |
5 A 8 | 2 | 4 |
10 A 12 | 3 | 5 |
14 A 16 | 3 | 7 |
18 A 24 | 4 | 10 |
26 A 30 | 5 | 10 |
32 A 42 | 5 | 13 |
44 A 48 | 5 | 20 |
ASME B 的应用 16.9 Buttweld Swedge Nipples
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in Chemical and petrochemical processing
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in refineries
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in electronics
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in fertilizer
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in power plant
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in nuclear power
- 美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in oil and gas
美国机械工程师协会B 16.9 Buttweld Swedge Nipples used in paper industries