Performance index

Reference standard

Unit

Standard requirement

Finished pipe combination

Appearance

CJ/T200-2004

No obviouspits,bulges,cracks

Work pipe axial movement

CJ/T200-2004

No jam can move

Outer protection pipe temperature

CJ/T200-2004

℃

≤50

Heat loss

CJ/T200-2004

W/ m²

≤100

Overall compressive strength

CJ/T200-2004

MPa

≥0.08

Axis eccentricity

CJ/T200-2004

mm

4/5/6

Vacuum absolute pressure (Vacuum type)

CECS206-2006

mbar

20

Extra-fine glass wool

Density

CJ/T200-2004

Kg/m³

48

Maximum working temperature

CJ/T200-2004

℃

454

Thermal conductivity

CJ/T200-2004

W/m.k

≤0.05

Average fiber diameter

CJ/T200-2004

μm

6

Water tolerance

CJ/T200-2004

100 degrees of boiling water

No significant changes in physical

Anti-moisture

CJ/T200-2004

Expose 96h

Moisture is less than the product weight

Anti-corrosion

CJ/T200-2004

For steel

No corrosion

Fire proofing

CJ/T200-2004

Non inflammability

Grade A

Wall  Thick

0.5mm-16mm,or customized

Length

1m-12m ,or by customer's requirements

Laid way

Buried, overhead, trench

Production Standard

CJ/T200-2004, CJJ104-2005

Packing

Plastic cap for both end, steel strips bundled

Application

Urban central heating Petroleum,chemical,power high temperature

Quality Control

100% X-Ray inspection

100% Hydraulic Pressure test

100% Ultrasonic inspection