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4. ASME B16.11 Forged steel fittings

Threaded Square Head Plug

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Description

Threaded Square Head Plug is an ideal choice for industrial applications that require durability, tightness and high pressure resistance, meeting strict technical and environmental requirements. With square head design, easy to install and maintain. High pressure and temperature resistance, ensuring stable performance in harsh environments. Precision threading ensures no leakage, meeting strict safety standards.

Applications

  • Oil and Gas Industry: Used to seal pipe ends in systems for conveying oil, gas, and other industrial fluids.
  • Chemical Industry: Ensures no leaks in chemical piping systems, helping to protect the environment and ensure worker safety.
  • Food Processing Industry: Meets hygiene and safety requirements in food and beverage piping systems.
  • Water and Wastewater Industry: Used to seal pipe ends in water supply and drainage systems and wastewater treatment, preventing leakage and loss.

Standards

The ASME B16.11 standard provides detailed and rigorous requirements for the design, materials, inspection and testing of threaded pipe fittings, including Threaded Square Head Plugs. Compliance with this standard ensures that products meet technical, safety and performance requirements in industrial applications.

  • Materials: Carbon steel, stainless steel, special alloys and brass.
  • Size: Specifies the nominal size (NPS) and outside diameter of pipe fittings.
  • Pressure and Temperature: Fittings must withstand pressure and temperature according to the levels defined in the standard. Typically, the maximum working pressure (WOG) listed in the standard table depends on the material type and size.

Threaded Square Head Plug Size and Thickness Chart

Size (NPS)

Overall Length (A)

Square Size (B)

Thread Thickness (C)

1/2″

1.06″ (26.9 mm)

0.56″ (14.2 mm)

0.13″ (3.2 mm)

3/4″

1.19″ (30.2 mm)

0.75″ (19.1 mm)

0.15″ (3.8 mm)

1″

1.38″ (35.1 mm)

0.94″ (23.9 mm)

0.18″ (4.6 mm)

1-1/4″

1.50″ (38.1 mm)

1.25″ (31.8 mm)

0.20″ (5.1 mm)

1-1/2″

1.63″ (41.4 mm)

1.50″ (38.1 mm)

0.23″ (5.8 mm)

2″

1.88″ (47.8 mm)

1.88″ (47.8 mm)

0.28″ (7.1 mm)

2-1/2″

2.13″ (54.1 mm)

2.25″ (57.2 mm)

0.34″ (8.6 mm)

3″

2.38″ (60.5 mm)

2.69″ (68.3 mm)

0.38″ (9.7 mm)

4″

2.75″ (69.9 mm)

3.56″ (90.4 mm)

0.43″ (10.9 mm)

5″

3.38″ (85.9 mm)

4.38″ (111.3 mm)

0.53″ (13.5 mm)

6″

3.88″ (98.6 mm)

5.31″ (134.9 mm)

0.63″ (16.0 mm)

8″

4.63″ (117.6 mm)

6.63″ (168.3 mm)

0.75″ (19.1 mm)

10″

5.25″ (133.4 mm)

8.50″ (215.9 mm)

0.88″ (22.4 mm)

12″

5.75″ (146.1 mm)

10.63″ (270.1 mm)

1.00″ (25.4 mm)

14″

6.38″ (162.1 mm)

12.25″ (311.2 mm)

1.13″ (28.7 mm)

16″

6.88″ (174.8 mm)

14.00″ (355.6 mm)

1.25″ (31.8 mm)

18″

7.50″ (190.5 mm)

15.75″ (400.1 mm)

1.38″ (35.1 mm)

20″

8.00″ (203.2 mm)

17.50″ (444.5 mm)

1.50″ (38.1 mm)

22″

8.63″ (219.2 mm)

19.25″ (489.0 mm)

1.63″ (41.4 mm)

24″

9.13″ (231.9 mm)

21.00″ (533.4 mm)

1.75″ (44.5 mm)

Note:

  • Size (NPS): Nominal size of pipe.
  • Overall Length (A): Total length of the plug from threaded end to square end.
  • Square Size (B): Size of the square end cap face.
  • Thread Thickness (C): Thickness of the pipe thread.

Material Summary of Threaded Square Head Plug

Material Type Standard Material Code Characteristic Typical Applications
Carbon steel ASTM A105 High durability, good resistance to pressure and temperature Oil, gas, and steam piping systems
Stainless Steel ASTM A182 (F304, F316) High corrosion resistance, durable Chemicals, food, pharmaceuticals, drinking water
Brass ASTM B62 Good corrosion resistance, easy to process Plumbing systems, HVAC systems, medical equipment
Special Alloys ASTM A182 (F11, F22, F91) High heat and pressure resistance, abrasion resistance Energy, petrochemical, boiler industries
Alloy steel ASTM A182 (F1, F5, F9) High heat and pressure resistance, good durability Thermal power, boiler, petrochemical industry
Thông thường, áp suất làm việc tối đa (WOG) được liệt kê trong bảng tiêu chuẩn phụ thuộc vào loại và kích thước vật liệu.

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