Chemical pipes those have high requirements concerning corrosion, temperature and pressure are produced from glass fiber reinforced with thermoplastic liner.

Design of pipes according to SFS 3274 and collars according to SFS 2617. Dimensions of pipes made of PRP-Plastic Oy are in table. Dimensions of collars made of PRP-Plastic Oy are in table.

The pipes does not weight much, requires no maintenance and is easy to clean. Due to the smooth internal area the pipe resistance is low.

Depending on the working conditions thermoplastic liner is chosen:

PVC __ poly (vinyl chloride)
PP____ polypropylene
PE-HD_ polyethylene, high density
PVDF__ poly (vinyldene fluoride)
ECTFE_ ethylen / chlortrifluorethylen
FEP___ perfluoro (ethylene / propylene)
PFA___ perfuoro alkoxyl alkane

Due to the excellent physical properties of GRP and the chemical resistance of thermoplastic liner, these pipes can used in higher temperature and pressure.

The main applications are:

• chemical industry
• textile, paper and chemical pulp industry
• water treatment systems
• industrial pickling plants
• electrotype plants
• chlorine electrotype plants
• power plants

Piping Pictures

Pipe

		PP/PEH	PVC	PVDF
DN	de	e	e	e	eLM	du	PN
	mm	mm	mm	mm	mm	mm
15	20	1,9	2,3	1,9	2,0	24	16
20	25	2,3	2,8	1,9	2,0	29	16
25	32	3,0	3,6	2,4	2,0	36	16
32	40	3,7	4,5	2,4	2,0	44	16
40	50	4,6	3,7	3,0	2,0	54	16
50	63	5,8	4,7	3,0	2,0	67	16
65	75	4,3	3,6	3,0	2,0	79	10
80	90	5,1	4,3	3,0	2,0	94	10
100	110	6,3	5,3	3,0	2,0	114	10
125	125	7,1	3,7	3,0	2,0	129	10
150	160	9,1	4,7	3,0	2,5	165	10
200	200	6,2	4,0	3,0	2,7	205,4	10
250	250	7,8	4,9	3,0	3,3	256,6	10
300	315	9,8	4,0	3,0	4,2	323,4	10
350	355	11,1	4,4	3,0	4,7	364,4	10
400	400	9,8	5,0	3,0	5,2	410,4	10
500	500	8,0	4,0	3,0	6,5	513	10

There is support distance for GRP pipes of PRP-Plastic Oy.

DN	KANNAKEVÄLIm
20	2,5
25	2,5
32	2,5
40	2,5
50	3,0
65	3,0
80	3,0
100	3,0
125	3,3
150	3,5
200	4,0
250	4,5
300	5,0

Collar

				PP / PEH /PVDF	PVC
DN	de	D	dk	H	H	h	PN
15	20	45	31	120	120	15	25
20	25	58	37	120	120	15	25
25	32	68	46	120	120	15	25
32>	40	78	53	120	120	15	25
40	50	88	64	120	120	15	25
50	63	102	76	120	135	16	25
65	75	122	90	125	140	16	16
80	90	138	106	140	160	16	16
100	110	158	126	140	180	17	16
125	125	188	141	180	190	17	10
125	140	188	156	180	210	17	10
150	160	212	176	180	230	19	10
200	200	268	223	180	206	22	10
200	225	268	247	200	260	22	10
250	250	320	271	220	300	27	10
300	315	370	336	220	365	31	10

The bolts must be tightened steadily. It must be avoided to exceed the indicated torques. These torque of bolts are applicable to flange connections made of GRP by using flat gasket of elastomeres approx. 60°C.

DN	Torque Nm
25	15
32	20
40	25
50	25
65	25
80	25
100	25
125	30
150	50
200	50
250	50
300	60
350	60
400	80
500	80