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What is ASTM A234 WPB Butt Weld Cap
ASTM A234 WPB butt weld cap is one of the butt weld type of fittings, which is usually used by connecting methods of butt welding. Thus, butt weld cap ends can in beveled or plain. Being the final weld bead in a weld joint, caps may be completed in the form of a stringer bead or by a weaving motion back and forth.
ASTM A234 (ASME SA234) is standard specification of carbon and alloy steel pipe fittings for moderate and high temperature services. Commonly used materials include ASTM A234 Grade WPB, WPC, WP5, WP9, WP11, WP22 and WP91.
ASTM A234 WPB butt weld cap act as protective device and are designed to protect pipe ends of various shapes. Therefore, the main purpose of using pipe caps is to waterproof the connections. And they can be used to close the the ends of hydraulic or pneumatic pipes and tubes as well.
Specification of ASTM A234 WPB Pipe Fittings
Specification | ASTM A234/ASME SA234 |
Dimensions | ASME/ANSI B16.9,ASME B16.28,MSS-SP-43 |
Size | 1/2"NB to 24"NB in. |
Type | Seamless /Welded /Fabricated |
Thickness | Sch 5s,5ch 10s,Sch 40s,Sch 80s,5ch 160s,Sch XXS |
Surface Treatment | Rust-proof black oil or hot galvanized,Transparent oil |
Bending Radius | R=1D,2D,3D,5D,6D,8D,10D or Custom |
Chemical Composition
ASTM A234 | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V |
Grade WPB | 0.3 max | 0.29-1.06 | 0.050 max | 0.058 max | 0.1 min | 0.4 max | 0.15 max | 0.4 max | 0.4 max | 0.08 max |
Weight Chart of Butt Weld Cap(KG)
| Nominal Size | Sch20 | Sch30 | STD | Sch40 | Sch60 | XS | Sch80 | Sch100 | Sch120 | Sch140 | Sch160 | XXS | |
| DN | NPS | ||||||||||||
| 15 20 25 | 1/2 3/4 1 | 0.04 0.05 0.10 | 0.04 0.05 0.12 | 0.04 0.05 0.12 | 0.06 0.07 0.16 | 0.06 0.07 0.16 | 0.08 0.11 0.22 | 0.11 0.15 0.32 | |||||
| 32 40 50 | 11/4 11/2 2 | 0.13 0.16 0.21 | 0.16 0.19 0.26 | 0.16 0.19 0.26 | 0.22 0.26 0.36 | 0.22 0.26 0.36 |  | 0.28 0.36 0.57 | 0.43 0.52 0.73 | ||||
| 65 80 90 | 21/2 3 31/2 | 0.40 0.65 0.90 | 0.44 0.73 1.07 | 0.44 0.73 1.07 | 0.59 1.08 1.51 | 0.59 1.08 1.51 | 0.80 1.48 | 1.18 2.02 | |||||
| 100 125 150 | 4 5 6 | 1.04 | 1.30 2.10 3.19 | 1.30 2.10 3.19 | 1.85 3.06 4.93 | 1.85 3.06 4.93 | 2.40 4.07 6.41 | 2.91 5.09 8.20 | 3.69 6.10 986 | ||||
| 200 250 300 | 8 10 12 | 4.45 6.89 9.75 | 4.92 8.46 12.9 | 5.72 10.1 14.6 | 5.72 10.1 15.9 | 7.21 13.9 21.9 | 8.88 13.8 19.5 | 8.88 16.4 26.9 | 10.6 19.8 32.9 | 12.8 23.3 39.0 | 14.5 27.6 43.9 | 16.1 31.0 51.2 | 15.6 27.6 39.0 |
| 350 400 450 | 14 16 18 | 14.6 18.3 23.4 | 17.6 22.1 32.9 | 17.5 22.1 28.2 | 20.5 29.4 42.2 | 27.7 38.6 56.3 | 23.3 29.4 37.5 | 35.0 49.7 70.4 | 43.8 60.7 B6.8 | 51.1 71.7 103 | 58.4 84.6 117 | 65.7 93.8 134 | |
| 500 550 600 | 20 22 24 | 35.1 42.7 49.7 | 46.8 56.9 74.5 | 35.1 42.7 49.7 | 55.6 91.2 | 76.0 99.7 129 | 46.8 57.0 66.3 | 96.5 128 162 | 120 157 203 | 141 185 240 | 164 214 273 | 184 242 311 | |
| 650 700 750 | 26 28 30 | 74.0 82.4 91.2 | 103 114 | 55.6 61.8 68.5 | | 74.1 82.4 91.2 | |||||||
| 800 850 900 | 32 34 36 | 101 110 120 | 126 138 150 | 75.4 82.7 90.2 | 138 152 180 | 101 110 120 | |||||||
| 950 1000 1050 | 38 40 42 | 104 113 122 | 139 150 162 | ||||||||||
| 1100 1150 1200 | 44 46 48 | 138 148 158 | | 184 197 210 | |||||||||
Application
ASTM A234 WPB butt weld cap is usually used in chemical, construction, gas, petroleum, power, shipbuilding etc.
Schedule 10 butt weld caps are an economical alternative for lower-pressure applications. And schedule 40 butt weld caps own a thicker wall for higher-pressure applications.
Package of Butt Weld Fittings
What is ASTM A234 WPB Butt Weld Cap
ASTM A234 WPB butt weld cap is one of the butt weld type of fittings, which is usually used by connecting methods of butt welding. Thus, butt weld cap ends can in beveled or plain. Being the final weld bead in a weld joint, caps may be completed in the form of a stringer bead or by a weaving motion back and forth.
ASTM A234 (ASME SA234) is standard specification of carbon and alloy steel pipe fittings for moderate and high temperature services. Commonly used materials include ASTM A234 Grade WPB, WPC, WP5, WP9, WP11, WP22 and WP91.
ASTM A234 WPB butt weld cap act as protective device and are designed to protect pipe ends of various shapes. Therefore, the main purpose of using pipe caps is to waterproof the connections. And they can be used to close the the ends of hydraulic or pneumatic pipes and tubes as well.
Specification of ASTM A234 WPB Pipe Fittings
Specification | ASTM A234/ASME SA234 |
Dimensions | ASME/ANSI B16.9,ASME B16.28,MSS-SP-43 |
Size | 1/2"NB to 24"NB in. |
Type | Seamless /Welded /Fabricated |
Thickness | Sch 5s,5ch 10s,Sch 40s,Sch 80s,5ch 160s,Sch XXS |
Surface Treatment | Rust-proof black oil or hot galvanized,Transparent oil |
Bending Radius | R=1D,2D,3D,5D,6D,8D,10D or Custom |
Chemical Composition
ASTM A234 | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V |
Grade WPB | 0.3 max | 0.29-1.06 | 0.050 max | 0.058 max | 0.1 min | 0.4 max | 0.15 max | 0.4 max | 0.4 max | 0.08 max |
Weight Chart of Butt Weld Cap(KG)
| Nominal Size | Sch20 | Sch30 | STD | Sch40 | Sch60 | XS | Sch80 | Sch100 | Sch120 | Sch140 | Sch160 | XXS | |
| DN | NPS | ||||||||||||
| 15 20 25 | 1/2 3/4 1 | 0.04 0.05 0.10 | 0.04 0.05 0.12 | 0.04 0.05 0.12 | 0.06 0.07 0.16 | 0.06 0.07 0.16 | 0.08 0.11 0.22 | 0.11 0.15 0.32 | |||||
| 32 40 50 | 11/4 11/2 2 | 0.13 0.16 0.21 | 0.16 0.19 0.26 | 0.16 0.19 0.26 | 0.22 0.26 0.36 | 0.22 0.26 0.36 | | 0.28 0.36 0.57 | 0.43 0.52 0.73 | ||||
| 65 80 90 | 21/2 3 31/2 | 0.40 0.65 0.90 | 0.44 0.73 1.07 | 0.44 0.73 1.07 | 0.59 1.08 1.51 | 0.59 1.08 1.51 | 0.80 1.48 | 1.18 2.02 | |||||
| 100 125 150 | 4 5 6 | 1.04 | 1.30 2.10 3.19 | 1.30 2.10 3.19 | 1.85 3.06 4.93 | 1.85 3.06 4.93 | 2.40 4.07 6.41 | 2.91 5.09 8.20 | 3.69 6.10 986 | ||||
| 200 250 300 | 8 10 12 | 4.45 6.89 9.75 | 4.92 8.46 12.9 | 5.72 10.1 14.6 | 5.72 10.1 15.9 | 7.21 13.9 21.9 | 8.88 13.8 19.5 | 8.88 16.4 26.9 | 10.6 19.8 32.9 | 12.8 23.3 39.0 | 14.5 27.6 43.9 | 16.1 31.0 51.2 | 15.6 27.6 39.0 |
| 350 400 450 | 14 16 18 | 14.6 18.3 23.4 | 17.6 22.1 32.9 | 17.5 22.1 28.2 | 20.5 29.4 42.2 | 27.7 38.6 56.3 | 23.3 29.4 37.5 | 35.0 49.7 70.4 | 43.8 60.7 B6.8 | 51.1 71.7 103 | 58.4 84.6 117 | 65.7 93.8 134 | |
| 500 550 600 | 20 22 24 | 35.1 42.7 49.7 | 46.8 56.9 74.5 | 35.1 42.7 49.7 | 55.6 91.2 | 76.0 99.7 129 | 46.8 57.0 66.3 | 96.5 128 162 | 120 157 203 | 141 185 240 | 164 214 273 | 184 242 311 | |
| 650 700 750 | 26 28 30 | 74.0 82.4 91.2 | 103 114 | 55.6 61.8 68.5 | | 74.1 82.4 91.2 | |||||||
| 800 850 900 | 32 34 36 | 101 110 120 | 126 138 150 | 75.4 82.7 90.2 | 138 152 180 | 101 110 120 | |||||||
| 950 1000 1050 | 38 40 42 | 104 113 122 | 139 150 162 | ||||||||||
| 1100 1150 1200 | 44 46 48 | 138 148 158 | | 184 197 210 | |||||||||
Application
ASTM A234 WPB butt weld cap is usually used in chemical, construction, gas, petroleum, power, shipbuilding etc.
Schedule 10 butt weld caps are an economical alternative for lower-pressure applications. And schedule 40 butt weld caps own a thicker wall for higher-pressure applications.
Package of Butt Weld Fittings
