Butt Weld Cap

Butt Weld Cap

We are manufacturer of butt weld cap and supplies all schedules in kinds of materials such as carbon steel, stainless steel, alloy steel. Zizi produces pipe caps in ASME, DIN, JIS and other required standards.

Pipe cap is one of the common used pipe fittings for stoping fluid by covering at the pipe end. It is available in butt weld type, socket weld type and threaded type, and buttweld cap is more popular in view of the good performance, stable connection and large dimension selection range.

Here some details of buttweld pipe caps: Dimensions, Materials, Weigh Chart, Manufacturing Process and Features.

Pipe Cap ASME B16.9 Dimensions

  • Size: from 1/2″ -48″ (DN15–DN1200)
  • Thickness: Sch10S, Sch20, STD, Sch40, XS, Sxh 80, Sch120, Sch 140, Sch160, XXS.
  • Form: Welded, Seamless
  • Standard: ASME B16.9 ASME B16.25
  • Material: Carbon Steel, Stainless Steel, Duplex Stainless Steel, Alloy Steel,Monel, Nickel, Inconel, Hastalloy
  • Finish:Galvanized or Black,PE and Pickled
  • Packing: Carton box, wooden box & pallet
ASME B16.9 Pipe Cap

ASME B16.9 Pipe Cap

Material Grades:

Carbon Steel Butt Weld Cap: ASTM A234 WPB, A420 WPL3,WPL6, WPL9,WPHY42, WHPY52, WPHY60, WHPY65, WPHY70.

Stainless Steel Pipe Cap: ASTM A403 WP304/304L, 316/316L, 321, 310S, 317,347

Duplex Stainless Steel BW Cap: UNS S31803, S32205, S32550, S32750, S32760

Alloy Steel BW Pipe Cap: ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91

Nickel Alloy BW End Cap: ASTM / ASME SB 111 UNS NO. C10100, C10200 , C10300 , C10800 , C12000, C12200, ASTM / ASME SB 466

Copper Alloy Steel Pipe Cap: UNS NO. C70600 ( CU -NI- 90/10) , C71500 ( CU -NI- 70/30)

Steel Pipe Cap Weight Chart

Steel Pipe Cap Weight/kg
Nominal Size SCH 20 STH SCH 40 XS SCH 80 SCH 120 SCH160
DN NPS
15  1/2                 0.04             0.04             0.06             0.06         0.08
20  3/4                 0.05             0.05             0.07             0.07         0.11
25 1                 0.12             0.12             0.16             0.16         0.22
32 1 1/4                 0.16             0.16             0.22             0.22         0.28
40 1 1/2                 0.19             0.19             0.26             0.26         0.36
50 2                 0.26             0.26             0.36             0.36         0.57
65 2 1/2                 0.44             0.44             0.59             0.59         0.80
80 3                 0.73             0.73             1.08             1.08         1.48
90 3 1/2                 1.07             1.07             1.51             1.51
100 4                 1.30             1.30             1.85             1.85             2.40         2.91
125 5                 2.10             2.10             3.00             3.06             4.07         5.09
150 6                 3.19             3.19             4.60             4.93             6.41         8.20
200 8                 4.45                 5.72             5.72             8.20             8.88           12.80       16.10
250 10                 6.89               10.10           10.10           13.00           16.40           23.30       31.00
300 12                 9.75               13.90           15.90           18.50           26.90           39.00       51.20
350 14               14.60               17.60           20.50           23.00           35.00           51.10       65.70
400 16               18.30               22.00           29.40           28.60           49.70           71.70       93.80
450 18               23.40               28.00           42.20           36.70           70.40         103.00     134.00
500 20               35.10               33.80           55.60           44.60           96.50         141.00     184.00
550 22               42.70               39.50           52.50         128.00         185.00     242.00
600 24               49.70               47.60           91.20           63.00         162.00         240.00     311.00


Buttweld Fittings Manufacturing Process

There are mainly tow ways for buttweld fittings manufacturing: cold drawn and hot forming.

The general process are as follows:

  • Material preparing
  • Cutting: Cutting pipes or plate into certain shape or length
  • Forming: Form materials into shapes such as BW Pipe cap, 90 degree elbow, reducing tee. Cold drawn product will be formed directly into specific shape by hammers, mechanical presses or upsetters. Hot forming process will heating the material first and then form it.
  • Heat Treatment: It is the process of heating and cooling metals to change the microstructure and to bring out the physical and mechanical properties that make metals more desirable.
  • Machining: This process is using sharp cutting tools to trim shapes and prepare ends.
  • Inspection and Test: In accordance to standards inspect the size, material and appearance.
  • Coating as requirement
Butt Weld Pipe Cap Manufacturing Process

Butt Weld Pipe Cap Manufacturing Process

Butt Weld Pipe Cap Features

Compared to other type pipe caps, butt weld pipe cap has advantages of

  • Low Cost
  • Large size range
  • High Leak Proof
  • Welded connection offers more robust connection
  • Welded construction permits greater freedom in designing a layout; this system uses less space, is more compact, and has greater strength.

 

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