ASME B16.11 Square Head Plugs are primarily used for sealing the ends of piping systems, providing sealing and protecting the internal structure of the pipes. HT PIPE is a leading stockist and global exporter with over 15 years of expertise in international trade. We supply pipes, plates, round bars, and a comprehensive range of pipe fittings, flanges, and valves. Contact us now for free quotes and personalized product information.
ASME B16.11 Standard Core Requirements
Pressure Rating: Applicable to high-pressure classes such as Class 2000, 3000, 6000, and 9000. The pressure-temperature ratings for different materials must comply with the requirements of the standard's appendix.
Size Range: Nominal pipe size (NPS) typically covers 1/8 to 4 inches. The specific size must match the pipe thread specifications.
Thread Type: Common types include NPT (American National Standard Taper Pipe Thread). Thread accuracy and sealing performance must meet the standard testing requirements.
Material Requirements: Must use forged carbon steel, stainless steel, alloy steel, and other materials conforming to ASTM standards, such as A105 (carbon steel), A182 F304/F316 (stainless steel), A182 F11/F22 (alloy steel), etc. The chemical composition and mechanical properties of the materials must be verified by third-party testing.
Surface Treatment: Depending on the application environment, pickling and passivation, galvanizing, or anti-corrosion coatings can be applied to ensure corrosion resistance.
ASME B16.11 Square Head Plug Product Features
Easy Installation: The square head allows for direct tightening with a wrench, providing stable torque transmission and facilitating quick installation and removal.
Reliable Sealing: Adopts a double sealing structure with threaded sealing + gasket (optional), meeting the sealing requirements under high-pressure conditions and reducing the risk of leakage.
Robust Structure: Formed by forging process, the material has high density and excellent pressure and impact resistance, suitable for harsh industrial environments.
Strong Versatility: Complies with international general standards and can be used with ASME B16.11 series pipe fittings worldwide, offering high interchangeability.

ASME B16.11 Square Head Plug Dimension
|
Nominal size |
Length |
Square height |
Width flats |
Head diameter |
Length |
Hex height |
Hex height |
Hex height |
|
|
DN |
NPS |
Amin |
Bmin |
Cmin |
Emin |
Dmin |
Hmin |
Gmin |
Fmin |
|
6 |
1/8 |
10 |
6 |
7 |
10 |
35 |
6 |
一 |
11 |
|
8 |
1/4 |
11 |
6 |
10 |
14 |
41 |
6 |
3 |
16 |
|
10 |
3/8 |
13 |
8 |
11 |
18 |
41 |
8 |
4 |
18 |
|
15 |
1/2 |
14 |
10 |
14 |
21 |
44 |
8 |
5 |
22 |
|
20 |
3/4 |
16 |
11 |
16 |
27 |
44 |
10 |
6 |
27 |
|
25 |
1 |
19 |
13 |
21 |
33 |
51 |
10 |
6 |
36 |
|
32 |
11/4 |
21 |
14 |
24 |
43 |
51 |
14 |
7 |
46 |
|
40 |
11/2 |
21 |
16 |
28 |
48 |
51 |
16 |
8 |
50 |
|
50 |
2 |
22 |
18 |
32 |
60 |
64 |
18 |
9 |
65 |
|
65 |
21/2 |
27 |
19 |
36 |
73 |
70 |
19 |
10 |
75 |
|
80 |
3 |
28 |
21 |
41 |
89 |
70 |
21 |
10 |
90 |
|
100 |
4 |
32 |
25 |
65 |
114 |
76 |
25 |
13 |
115 |





