Thermal Insulation Steel Pipe for Underground Pipeline

• Customization: Available
• Color: Black
• Connection Type: Seamless
• Model NO.: insu008
• Diameter: 273mm
• Material: Carbon Steel
• Size: 2"-12"
• Delivery Time: 30 Days
• Sample: Can Be Provided
• Head Code: Round
• Connection: Welding
• Payment: T/T, LC at Sight
• Type: Heavy Crude Oil
• Temperature Classification: Medium Temperature Piping
• MPa Classfication: Medium Pressure Piping
• Standard: ASTM, GB, API, DIN, JIS
• Medium: Liquid
• Cross-Section Shape: Round
• Transport Package: Standard Package
• Specification: DN25-DN1400
• Trademark: OEM
• Origin: China
• HS Code: 7304192000
• Production Capacity: 50000/PCS

Product Description

Product Description
steal pipe with Polyurethane foam insulation and HDPE jacket sleeve

Name	Pre-insulated Pipe
structure	work steel pipe/polyurethane insuation layer /HDPE outer protection pipe
the material of insuation layer	polyurethane foam
Installation Method	1.cold installation 2.Prestress Installation 3.Preheat Installation Method 4.One-Time Compensator Installation Method

 
Main Indexes of Polyurethane insulation layer 
 

indexes	preference Standard	unit	standard requirement
Density	CJ/T114-4.3.2	kg/m3	≥60
Average	CJ/T114-4.3.1	mm	≤0.5
Percentage of close area	CJ/T114-4.3.1	%	≥ 88
Compressive strength	CJ/T114-4.3.3	MPa	≥ 0.3
Water Absorption	CJ/T114-4.3.5	%	Immersion in boiling water 90 minute,bubble water absorption should be not more than 10%
Cavity	CJ/T114-4.3.1		≤ 0.033

 
Specification of pre-insulated Pipe
 

Specifications (mm)	steel pipe OD×Thickness (mm)	Outer protection tube diameter ×Wall thickness (mm)	Insulation thickness (mm)	Unit weight Kg/m
32/90	32×2.8	90×2.5	26.5	3
45/110	45×2.8	110×2.5	30.0	4
57/120	57×3.0	120×2.5	29.0	6
60/125	60×3.5	125×3.0	29.5	7
76/140	76×4.0	140×3.0	29.0	9
89/160	89×4.0	160×3.0	32.5	11
108/180	108×4.0	180×3.0	33.0	13
133/200	133×4.5	200×3.2	30.3	17
159/250	159×4.5	250×3.9	41.6	22
219/315	219×6.0	315×4.9	43.1	39
273/365	273×6.0	365×5.6	40.4	49
325/420	325×7.0	420×7.0	40.5	67
377/500	377×7.0	500×7.8	53.7	81
426/560	426×7.0	560×8.8	58.2	94
478/600	478×7.0	600×8.8	52.2	104
529/630	529×7.0	630×9.8	40.7	114
529/655	529×7.0	655×9.8	53.2	117
630/760	630×8.0	760×11.5	53.5	158
720/850	720×8.0	850×12.0	53.0	181
820/960	820×10.0	960×14.0	56.0	252
920/1055	920×10.0	1055×14.0	53.5	281
1020/1155	1020×10.0	1155×14.0	53.5	312
1220/1380	1220×12.0	1380×16.0	64.0	444
1420/1602	1420×14.0	1602×16.0	75.0	590

Advantage of the pre-insulated pipe   

1.	good insulation properties
2.	low heat loss
3.	heat loss is 25% of the traditional pipe.
4.	energy saving
5.	about 30 yeas move the service life, low cost
6.	has a strong waterproof and corrosive resistance and high mechanical strength
7.	no attached trench ,can be directly buried in the ground or water.