Design and Parameters


 

1. Table of Structural Type of Bellows Expansion Joints

Compensation Type

Type Code

Name

Product Introduction

Axial type

TN

Universal internal pressure Simple structure, with inner sleeve if required, applied to straight pipelines of no need of refractory, such as heating, coal gas, chemical and inlet & outlet of pumps.

WY

Axial external pressure Large compensation dosage, applied to pipelines of heating, electricity and steam, sinter & liquid pipelines in chemical factory.

FSL

Twin tied Large compensation dosage, self -guide flow, applied for lateral movement of ordinary straight pipelines.

FST

Twin telescope Large compensation dosage, self -guide flow, with inner sleeve if needs, application same as universal internal pressure type, but easier for refractory.

MNY

Direct buried internal pressure Features same as universal internal pressure type, and can be buried underground.

MWY

Direct buried external pressure Features same as axial external pressure type, and can be buried underground.

ZYP

Straight pressure-balanced Applied to straight pipelines where fix support can’t be placed.
Lateral type

DLH

Lateral big tied Large compensation dosage, compensating both axial & radical movement, applied to pipelines where can’t place guide supports.

XLH

Lateral small tied Large compensation dosage, compensating the axial, radical and little angular movements of planar pipelines and other pipelines where fix support can’t be placed.

QYP

Elbow pressure-balanced Large compensation dosage, applied to the outlet of equipments in the right-angle pipelines where fix support can’t be placed.
Angular type

DJB

Single angular Compensate the angular movement of planar pipelines

WXJ

Gimble angular Compensate the angular movement of spacial pipelines.

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