SFRK-M500S马鞍式人孔：

SFRK-M500S Saddle typemanhole:

设计特点：

Design feature:

  500mm马鞍式人孔组件，8点固定（可选6点固定）8mm厚翻边可适用于任何罐体半径，人孔盖采用双层压制成型。

500mm saddle manhole asssembly, 8-point fastening (or 6-point fastening being optional) and 8mm flanging, suitable for any tank radius; manhole cover adopts double pressing. 

技术资料：

Technical specifications: 

重量Weight：

设计压力Design pressure：4Bar(58PSI)

试验压力Test pressure:4Bar(87PSI)

设计温度Design temperature:-40℃~200℃