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DN1680 seamless thermal insulation elbow
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Classification:
- Product Description
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Product structure:
High-density polyethylene seamless outer protective pipe prefabricated directly buried thermal insulation pipe fittings are a trinity structure in which steel pipe fittings, thermal insulation layer and seamless outer protective pipe are closely combined, and supports and signal lines can be set in the thermal insulation layer.

Product introduction:
1. The thermal insulation elbow is mainly used for the steering of the thermal insulation straight pipe, and is generally used in conjunction with the thermal insulation pipeline. It is used for compensation according to the design of the thermal insulation engineering pipeline, so that the elbow part can also have sufficient thermal insulation performance. The standard elbow angle is 30 degrees, 45 degrees, 60 degrees and 90 degrees.
2. Polyurethane thermal insulation elbow has good thermal insulation performance, strong waterproof and corrosion resistance, can be directly buried in the ground or water, simple and rapid construction, low comprehensive cost, long service life, convenient maintenance and low cost.
3. Widely used in liquid, gas pipe network, chemical pipeline insulation engineering petroleum, chemical, central heating network, central air conditioning ventilation pipeline, municipal engineering.
4. The main parameters of heat resistance, cold resistance, bond strength, compressive strength, water absorption.

Bending radius:
Nominal size DN mm Bending angle (°) Bending radius R mm 80-150 15-90 R≥ 3DN 200-1600 15-90 R≥ 1.5DN 80-1600 1-15 R≥ 1.5DN 
Length and deviation of straight pipe section of elbow
Nominal size DN mm Bending angle (°) Length of straight pipe section mm 80-150 15-90 250±10 200-1600 15-90 300±10 80-1600 1-15 300±10 
Length of straight pipe section of outer protection elbow
Outer diameter of outer protective tube D mm Bending angle (°) Length of straight pipe section mm 200-400 15-90 100±10 401-1400 15-90 150±10 1401-1900 15-90 200±10 200-1900 1-15 200±10 Outer diameter and minimum wall thickness of outer protective tube
Outer diameter of outer protective tube D mm Minimum wall thickness mm 75 ≤ D≤ 160 3.0 200 3.2 225 3.5 250 3.9 315 4.9 365 ≤ D≤ 400 6.3 420 ≤ D≤ 450 7.0 500 7.8 560 ≤ D≤ 600 8.8 630 ≤ D≤ 655 9.8 760 11.5 850 12.0 960 ≤ D≤ 1200 14.0 1300 ≤ D≤ 1400 15.0 1500 ≤ D≤ 1700 16.0 1800 17.0 1900 20.0 Product advantages:
1. The outer protective pipe is a seamless elbow to ensure the same strength as the outer protective pipe of the main pipeline.
2. The insulation layer is evenly distributed, the thickness of the insulation layer is the same as that of the main line, and the insulation effect can meet the design requirements.
3. Long service life, save energy and reduce energy costs.
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