The outer three claw manhole cover, also known as the external pressure manhole cover of bulk cement tank car, is installed on the top of the tank car, for people to enter and exit the tank channel, view the goods and natural conditions of the observation mouth, but also an important loading mouth of the tank car, the standard configuration of powder material tank car the outer diameter of the manhole of the tank is 520mm or 540mm

Main parameters of manhole cover：

Product name: outer three claw manhole cover

Model: HT. RKGWT - 520 / HT. RKGWT - 540

Design pressure: 0.3mpa

Design temperature: -40°C~140°C

Applicable medium: bulk cement and other powder materials

人孔盖性能：Manhole cover product performance:

1, manhole manufacturing, testing are in accordance with the international GB21S17-200S regulations;

2. The manhole cover weld has no cracks, pores, bite and other defects, and the weld is polished smoothly.

3, the outer three claw manhole cover is suitable for the transportation of powder materials