Malleable Iron 341 Conical Joint Union M/F NPT Thread

Size: 1/2”-2”
Material: ANSI/ASTM A197-A,KTH350-10
Dimension: ANSI/ASTM B16.3/14/39
Thread: ANSI/ASTM B1.20.1,NPT
Pressure Rating: 363PSI,CLASS150
Surface Treatment:Hot-dip Galvanized,Electro Galvanized,Black
Zinc Coating: ASTM A 153
Certificate: UL Listed / FM Approved / NSF 61
Application: Fire Protection,Waterworks,HVAC,Plumbing,GAS,Irrigation,or other piping systems

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Product Description

Products Details

Malleable Iron 341 Conical Joint Union M/F. The “Conical Joint Union M/F” refers to a specific type of conical joint union. Both threaded can be BSPT as per ISO 7-1,BS 21 or other standard. Also can be NPT as per ANSI/ASTM B1.20.1 standard. The current size is from 1/2″ to 2″, we can also open new mold to meet customers’ requirement.

Product Drawing

Size L(mm) PCS/CTN.
1/2″ 65 140
3/4″ 71.5 120
1″ 79 80
1-1/4″ 90 40
1-1/2″ 96 32
2″ 107 20

The production process:

6. Correction
After polishing, castings whose roundness does not meet the requirements or whose surface appearance does not meet the requirements must undergo a correction process to make the appearance meet the requirements.

7. Grinding
After correction, the castings need to be polished to remove the large slag remaining on the surface through a grinding process in order to achieve a beautiful appearance.

We do the correction and grinding one by one for each malleable iron pipe fittings. To 100% ensure the quality for all the fittings.

The advantage of grinding

Eliminate Defects: Grinding removes surface irregularities such as excess material, burrs, or rough spots left over from the casting or initial molding process.

Dimensional Accuracy: It helps in achieving precise sizes and shapes by carefully removing material to meet the required specifications.

Surface Finish: Grinding improves surface finish, making it smoother and more polished.