Coated spiral welded corrugated composite steel pipes and stainless steel spiral welded corrugated steel pipe accessories for underground gas drainage in coal mines45 ° elbowModel（Refer to Table 14）
Tube wall thicknessSpecification and model (nominal diameter)
Pipeline accessories (PGJ: coated pipeline accessories, TGJ: coated pipeline accessories, including stainless steel pipelines)
For example, TGJ-45WT-300-05 represents a flanged 45 ° elbow fitting with a nominal diameter (DN) of 300 coated pipes, with a wall thickness of 5mm.
Table 14: 45 ° elbow parametersNominal DiameterDNTube parametersEnd face flange parametersStructure lengthOuter diameter of the tubeBending radiusWall thicknessFlange thicknessFlange outer diameterInner diameter of flangeHole center distanceConnection apertureNumber of connecting holes
90 ° elbowModelTube wall thicknessSpecification and modelPipeline accessories (PGJ: coated pipeline accessories, TGJ: coated pipeline accessories, including stainless steel pipelines)
For example, PGJ-90WT-300-05 represents a 90 degree flanged elbow fitting with a nominal diameter (DN) of 300 for a covered pipeline, with a wall thickness of 5mm. Please refer to the website for technical parameters http://www.hnsmxcl.com .
Reducing teeModelTube wall thicknessBranch pipe specifications and modelsSupervisor specifications and modelsPipeline accessories (PGJ: coated pipeline accessories, TGJ: coated pipeline accessories, including stainless steel pipelines)
For example, PGJ-YS400/300-05 indicates that the cladding pipeline accessory is a flanged DN400-DN300 reducing tee fitting with a wall thickness of 5mm. Note: Technical parameters can be found on the website for details http://www.hnsmxcl.com .
Straight TeeModelTube wall thicknessSpecification and modelPipeline accessories (PGJ: coated pipeline accessories, TGJ: coated pipeline accessories, including stainless steel pipelines)
For example, PGJ-DST-300-05 indicates that the covered pipeline is equipped with a flanged nominal diameter (DN) 300 equal diameter tee fitting with a wall thickness of 5mm. Note: Technical parameters can be found on the website for details http://www.hnsmxcl.com
Reducing jointModelTube wall thicknessSmall end specifications and modelsLarge end specifications and modelsPipeline accessories (PGJ: coated pipeline accessories, TGJ: coated pipeline accessories, including stainless steel pipelines)
For example, PGJ-YJ400/300-05 indicates that the cladding pipeline accessory is a flanged DN400-DN300 reducing joint fitting with a wall thickness of 5mm. Note: Technical parameters can be found on the website for details http://www.hnsmxcl.com .
