The Chinese manhole adopts quick opening structure, which is convenient to open, safe, beautiful and practical in appearance. It has square, round and oval shape and can bear pressure ≤ 0.5MPa. Manhole is widely used in mobile tank and fixed tank. The internal and external mirror surface finish RA ≤ 0.8 μ m, inner mechanical polishing and outer surface mirror polishing or matt.

Specifications and parameters of Chinese manhole:

Material: 304 (1.4301)

Internal surface treatment: 0.8 μ m-0.4 μ M

External surface treatment: mirror polishing, Matt, sandblasting.

Sealing material: silica gel, EPDM, NBR, fluororubber conforming to fda177.2600;

Access: through manhole, three-way manhole, four-way manhole and inclined manhole.

Understand the installation position and function of manhole