Boiler Tube Shields

Date:2019-4-24 17:46:52 Visits: Author:Dongfang YOYIK Engineering Co; Ltd,

Boiler Tube Shields Pipe Cover China Manufacturer

 

 

INTRODUCTION

 

YOYIK provides a variety of Boiler Tube Shields, used for protecting the heating surface and wind receiving surface of boiler superheater, reheater, economizer, water wall and other pipelines, to reduce pipe wear and increase service life. In general industry, it is also called as anti-wear cover, anti-wear plate, anti-wear protection tile, anti-wear cover plate, anti-corrosion cover plate, boiler climbing tube, and so on. It is a common accessory for the heating surface tube coverage of power station boilers, and it is used together with the snap ring.

 

 

MAKING MATERIAL

 

The selection of materials for boiler tube shields is generally based on the initial design of the boiler. Different materials are resistant to temperature and mechanical strength.

 

Stainless steel material: 1Cr18Ni9Ti (321), Cr23Ni13 (309S), 1Cr20Ni14Si2, Cr25Ni20 (310S) 1Cr25Ni20Si2, also some low temperature areas (such as low temperature superheater, low temperature reheater) using 1Cr13, 1Cr6Si2Mo and other materials.

 

Material	Temperature Resistance (¡æ)	Yield Strength (Δ0.2mpa)	Tensile Strength	Elongation (Δ5%)	HB	HRB	HV
1Cr18Ni9Ti	925	≥205	≥520	≥40	≤187	≤90	≤200
Cr23Ni13	1095	≥205	≥520	≥40	≤187	≤90	≤200
1Cr20Ni14Si2	1095		≥590	≥40
Cr25Ni20	1150	≥205	≥520	≥40	≤187	≤90	≤200
1Cr25Ni20Si2	1150		≥540	≥35

 

 

APPEARANCE

 

Shape of boiler tube shields mostly are semi-circular (180 degrees or 120~160 degrees), divided into straight shields, inner shields, external curved shields, side curved shields, S-shaped curved shields and so on.

 

Straight boiler tube shields are commonly used in lengths of 20mm-3000mm and 1000-2000mm;

 

Curved boiler tube shields are processed based on drawings. Following parameters needs to be provided: pipe outer diameter, pipe bending radius R (to the center of the pipe), bending angle and length of both sides of arc.

 

 

 

 

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