China manufacturer of ASTM A105 Hex Head Shoulder Plug for Heat Exchanger
What is Hex Plug?
Hex plug is a forged pipe fittings with a Hexagonal Head and thread body.It is used in piping systems to close or seal the end of a pipe or fittings.
Shoulder plug or header plug are made for plugs type header boxes in air cooled heat exchangers or fin fan air coolers. A shoulder plugs and gasket are located opposite each tube which allows access for inspection and cleaning of individual tubes. Spare plugs and gaskets may be needed to replace originals during routine maintenance or used to plug leaking tubes.
Shoulder plugs are made from different material grades, such as SA 105 /ASTM A105 forged steel.
What is ASTM A105?
ASTM A105 is a specification for carbon steel forgings, such as flanges, fittings, valves, and other parts that are used in pressure-containing applications.
Chemical Composition of ASTM A105
| C | Mn | Si | Cu | Cr | Ni | Mo | P | S | V | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min. | 0.60 | 0.15 | ||||||||
| Max. | 0.35 | 1.05 | 0.35 | 0.40 | 0.30 | 0.40 | 0.12 | 0.035 | 0.040 | 0.08 |
Heat Treatment
ASTM A105 Mechanical Properties
| Tensile Strength min. | Yield Strength min. | Elongation min. | Reduction of Area, min. | Hardness | ||
| MPa | ksi | MPa | ksi | % | % | HBW |
| 485 | 70 | 250 | 36 | 22 | 30 | 137-187 |
ASTM A105 shall be annealing, normalizing, or normalizing and tempering or quenching and tempering in accordance with Specification A961/A961M
ASTM A105 Hex Head shoulder Plug Dimension
| Plug | Std | Length | Length | Hex Size Inch |
Hex Size MM |
| Dia | UNF | Under Head Inch |
Under Head MM |
||
| 3/4 | 16 | 5/8 | 15.90 | 1 | 25.40 |
| 3/4 | 19.05 | ||||
| 7/8 | 22.23 | ||||
| 1 | 25.40 | ||||
| 1.1/4 | 30.75 | ||||
| 7/8 | 14 | 7/8 | 22.23 | 1.1/8 | 28.58 |
| 1 | 25.40 | ||||
| 1.1/8 | 12 | 3/4 | 19.05 | 1.3/8 | 34.93 |
| 7/8 | 22.23 | ||||
| 1 | 25.40 | ||||
| 1.1/8 | 28.58 | ||||
| 1.1/4 | 30.75 | ||||
| 1.3/8 | 34.93 | ||||
| 1.1/2 | 38.10 | ||||
| 1.5/8 | 41.28 | ||||
| 1.3/4 | 44.45 | ||||
| 2 | 50.80 | ||||
| 1.3/8 | 12 | 3/4 | 19.05 | 1.5/8 | 41.28 |
| 7/8 | 22.23 | ||||
| 1 | 25.40 | ||||
| 1.1/8 | 28.58 | ||||
| 1.5/8 | 12 | 7/8 | 22.23 | 1.7/8 | 47.63 |
| 1 | 25.40 |
Hex plugs are integral forged pipe fittings designed to provide a reliable and durable solution for sealing the ends of pipes or fittings for heat exchanger.
How to buy ASTM A105 Shoulder Plugs?
we provide high-quality ASTM A105 shoulder plugs,Hex Head Plugs. All our products are manufactured under strict compliance with ASTM standards
