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Steel-wire Reinforced Polyethylene Composite Pipe With Injection Molded Ends

The cross helically wound steel wires reinforced polyethylene composite pipe or steel wires welded skeleton reinforced polyethylene composite pipe or cross helically wound steel wires reinforced ultra-high molecular weight polyethylene composite pipe with one end sealed or unsealed shall be cut at a fixed length, and the polyethylene pipe special material shall be used to produce the composite pipe with plastic ends at one end or both ends through the injection molding process. It includes three categories of products: steel wires reinforced polyethylene composite pipe with end sealing by injection for butt fusion or flange connection, and flanged length,

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SHUANGTENG

Product Description

Standards And Technical Specification

◉《Steel-wire reinforced polyethylene composite pipe with injection molded ends》T/CECS 10332-2023

◉《Technical specification for buried plastic pipeline of water supply engineering》CJJ101-2016

◉《Code for construction and acceptance of water and sewerage pipeline works》GB/T 50268-2008

Product Specification

The pipe for butt fusion

dₙ	Nominal outer diameter of plastic end / mm
dₙ	PN 1.0 MPa	PN 1.6 MPa	PN 2.0 MPa
50	–	63	63
63	–	75	75
75	–	90	90
90	–	110	110
110	125	125	125
140	160	160	160
160	180	180	180
200	225	225	225
225	250	250	250
250	280	280	280
315	355	355	355
355	400	400	450
400	450	450	500
450	500	500	560
500	560	560	630
560	630	630	710
630	710	710	–

The pipe for flange connection, and flanged length

dₙ	Nominal outer diameter of plastic end / mm	Matching O-ring (inner diameter × Section diameter)	Specification of flange plate
50	75	55 × 5.30	40
63	90	69 × 5.30	50
75	110	80 × 5.30	65
90	125	95 × 5.30	80
110	160	115 × 5.30	100
140	180	145 × 5.30	125
160	200	165 × 5.30	150
200	250	217 × 5.30	200
225	250	217 × 5.30	200
250	315	275 × 7.00	250
315	355	325 × 7.00	300
355	400	375 × 7.00	350
400	450	425 × 7.00	400
450	500	475 × 7.00	450
500	560	530 × 7.00	500
560	590	550 × 7.00	500
630^a	675	630 × 7.00	600
630^b	710	630 × 7.00	600

The applicable nominal pressure is not greater than 1.0MPa;

B Applicable nominal pressure greater than 1.0MPao

Pipe length

It is 6m or 12m, which can also be negotiated supply and requisitioning parties.

Performance

Items	Test temperature / ℃	Test pressure / MPa	Test time / h	Performance requirement
Hydrostatic strength	20	2PN	1	No rupture, no leakage
	60^a	1.2PN	165
	60^a	1.1PN	1000
	80^b	1.5 × 0.76PN	165
	80^b	1.5 × 0.71PN	1000
Burst pressure	20	Continuous pressure increase until the specimen bursts	≥ 3PN

^aApplicable to EJSRCP and EJSRUP; ^bApplicable to EJSRPE.

Physical and mechanical properties

Items	Test conditions	Performance requirement
Melt mass flow rate (MFR)^a	5kg, 190℃	The change of polyethylene MFR before and after processing shall not exceed ±25%
Melt volume flow rate^b	—	≤ 0.6 cm³/10min
Thermal stability (oxidation induction time)^c	210℃	≥ 20 min
Stress crack stability^c	100mm/min	No cracks, delamination or cracking
Peel strength^d	100mm/min	Average peel strength ≥ 15N/mm, single specimen peel strength ≥ 12N/mm, and the peel interface is ductile fracture with flocculent surface
Peel strength^e	100mm/min	Average peel strength ≥ 10N/mm
Notched hydrostatic strength^f	20℃, 1.5PN, 165h	No rupture or leakage in the cut annular groove
Pipe wear loss^g	—	Reported value

a: Applicable to the main body and plastic ends of EJSRCP and EJSRPE pipes, and the polyethylene outer layer and plastic ends of EJSRUP pipes;
b: Applicable to the ultra-high molecular weight polyethylene inner layer of EJSRUP pipes;
c: Applicable to the main body and plastic ends of the pipe;
d: Applicable to the main body of EJSRCP pipes;
e: Applicable to the main body of EJSRUP pipes;
f: Applicable to the main body of EJSRCP and EJSRUP pipes;
g: Applicable to the main body of EJSRUP pipes.

Connection Method And Application Range

1、Butt fusion

It is applicable to pipeline engineering with working temperature no more than 40 C and nominal pressure no more than 2.0MPa.

2、Flange connection

It is applicable to pipeline engineering with working temperature no more than 70 C and nominal pressure no more than 4.0MPa.

3、 Connection of elbow, tee and reducing direct and other fittings

Butt fusion joint between two pipes and PE pipe fittings such as elbows, tees and reducing direct of one size larger.

4、Treatment method after cutting off pipes on site

The middle transition section of the pipe directly adopts PE solid wall pipe with the same pressure grade and one larger specification for butt fusion, which eliminates the need to cut off the pipe. It is fast, convenient and low cost.

Features And Applications

◉ The construction is convenient, fast and cost-effective.

◉ High connection strength and no leakage.

◉ Solved the problems of leakage of The cross helically wound steel wires reinforced polyethylene composite pipe and water channeling between steel wire and plastic layers.

◉ EJSRUP is in contact with the transmission medium with PE-UHMW inner pipe, which has the excellent performance of PE-UHMW, such as wear resistance, corrosion resistance, self-lubricating, non scaling, extremely low friction coefficient

and low transmission energy consumption.

◉ Good hygiene performance, no secondary pollution of drinking water, in accordance with GB/T 17219 safety evaluation

regulations.

◉ The inner wall is smooth without scaling, and the water flow resistance is small.

◉ The end injection molded steel skeleton polyethylene composite pipe is a new type of pipe with excellent performance, which is widely used in fluid pressure transmission projects.

Erection Joint

Plastic(PE) Composite Pipe mainly applies electric heat melting link and flange link. For electric heat melting link, insert the composite pipe into an electric heat melting pipe, heating by electric wire may melt the surface of pipe and fill gap between the pipe material and pipe until surface of pipe material forms melting material, two kinds of melt combine and cool and link together. link between the composite pipe and metal pipe,valve and meter flange link. Tensile strength and exposion strength of joint for both electric heat melting link and flange link of composite pipe are higher than those of the pipe material,

Special Tools For Construction

Construction appliance: welding machine, portable cutting machine, polisher, sledge, rag, tape, oil-base marker, etc.

The appearance and the contacts of pipes and pipe fittings should be carefully examined, and the dirts and impurities in them should be cleared away.

When there is a large temperature difference between construction site and material storage site, pipes and pipe fittings should be laid aside at the site for a period of time prior to installation to make the temperature close to the ambient temperature at the construction site.