Technical information pipes and pipe clamps

Here you will find information about the different types of pipe clamps and the types of pipes and fittings they are suitable for. You can also learn about material selection and dimensions for pipes and fittings, and how to choose the right clamps to suit your specific needs. Whether you are a professional in hydraulics, plumbing or construction this page can be of great help in understanding piping systems and how to choose the right pipe clamps to ensure their durability and performance. Pipes and fittings are the basic building blocks of many different types of systems, including hydraulic, cooling, and plumbing systems. Pipe clamps are used to hold the pipes in place and protect them from vibrations, movement, and other forces that can affect their performance and durability.

Quicklinks: Clamp measurements | Clamp distancing | Tightening torque

Clamp measures

All measurements are given in milimetres.

Teknisk ritning av klammer från standardserien

Standard series

Type	Ø	b	c	d	h
C2	6-12	28	28	-	0,6
C3	14-18	37	28	20	0,6
C4	20-25	50	36	33	0,8
C5	28-32	57	44	40	1
C6	35-42	69,5	57	52	1

Teknisk ritning av klammer från tung serie

Heavy series

Type	Ø	b	c	d	f	g	h	i
CP1	12-20	58	33	33	30	70	1	8
CP2	22-30	72	49	45	30	87	1	8
CP3	30-45	87	60	60	30	105	1,2	8
CP4	38-70	120	88	90,5	45	155	2	10
CP5	73-90	155	118	122	60	200	3	10
CP6	100-121	205	165	168	80	225	3	15
CP7	133-168	245	200	205	80	270	4	15
CP8	168-219	320	270	265	120	340	4	25
CP9	219-324	470	410	395	160	520	10	30

Double clamp

Type	Ø	b	c	d	e	f	i
CF1	6-12	36	27	20	37	0,6	4
CF2	14-18	54	26	29	55	0,8	4
CF3	20-25	67	37	36	70	1	4
CF4	28-30	81	42	45	85	1	4
CF5	35-42	106	53	56	110	1,2	4

Recommended distances for pipe clamps

Illustration av två rör med rörklammer i båda ändarna, där avståndet är markerat med en linje

Standard and double clamp

Clamp type	Pipe diameter (mm)	Spacing – L (m)
Group 1	6–12.25	0.9
Group 2	6–13.25	1.0
Group 3	14–18	1.2
Group 4	20–25.4	1.5
Group 5	28–32	1.5
Group 6	32–45	2.2
Group 7	45–54	2.7
Group 8	57.2–76.1	3.2
Group 9	88.9–102	4.0

Heavy series

Clamp type	Pipe diameter (mm)	Spacing – L (m)
Group 1	6–20	1.0
Group 2	20–30	1.5
Group 3	30–45	2.2
Group 4	38–50	2.2
Group 4	53–70	3.0
Group 5	65–73	3.0
Group 5	80–90	3.5
Group 6	100–121	4.5
Group 7	133–168	5.0
Group 8	168–219	6.0
Group 9	166–220	6.7

Tightening torque and maximum load in the direction of the pipe

All torque and pipe loads in flow direction are valid for clamping tested on steel pipes ST 35.4 with cover type "PS" and hexagon nut UNI 5737.

Sliding commences on reaching value "P".

Rör med rörklammer, där en pil ed P visas

Pipe clamp Standard series

		Polypropylene		Self-extinguishing polyamide		Aluminum
Type	Bolt	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)
C1	M6	8	0.7	10	0.7	12	3.6
C2	M6	8	1.2	10	0.9	12	4.3
C3	M6	8	1.5	10	1.0	12	4.4
C4	M6	8	1.7	10	1.8	12	4.8
C5	M6	8	1.8	10	1.9	12	5.2
C6	M6	8	2.0	10	2.1	12	7.5
C7	M6	8	2.2	10	2.8	12	9.0
C8	M6	8	2.3	10	2.5
C9	M6	8	2.4	10	2.5

Pipe clamp heavy series

		Polypropylene		Self-extinguishing polyamide		Aluminum
Type	Bolt	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)
CP1	M10	13	1.8	21	4.5	32	13.0
CP2	M10	13	3.0	21	4.7	32	16.0
CP3	M10	15	3.5	25	5.2	37	16.5
CP4	M12	30	8.5	40	9.5	55	30.5
CP5	M16	46	11.5	56	27.0	125	36.4
CP6	M20	80	15.0	155	25.0	225	71.7
CP7	M20	100	30.0	185	34.0	235	62.5
CP8	M30	190	41.0	360	50.0	500	86.7
CP9	M30	210	125.0	380	130.0	500	190.5

Pipe clamp double clamp

		Polypropylene		Self-extinguishing polyamide
Type	Bolt	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)
CF1	M6	6	1.1	6	1.1
CF2	M8	13	2.5	13	2.5
CF3	M8	13	2.1	13	2.1
CF4	M8	13	2.9	13	3.1
CF5	M8	9	2.2	9	2.7

Pipe clamp body

Mechanical Properties	Test Method	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black	Aluminum Alloy EN AB-ALSi11Cu2(Fe)
Bending Strength	DIN 53452	43 N/mm²	230 N/mm²	70 N/mm²
Impact Strength	DIN 53453	11 kJ/m²	40 kJ/m²	-
Compression Strength	ASTM D 695	12,000 N/mm²	160 N/mm²	HB 500 up to 600 N/mm²
Modulus of Elasticity	DIN 53452	1,400 N/mm²	9,000 N/mm²	68,000 up to 78,000 N/mm²
Tensile Strength	DIN 53455	35 N/mm²	160 N/mm²	170 up to 220 N/mm²

Pipe clamp body

Thermal Properties	Test Method	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black	Aluminum Alloy EN AB-ALSi11Cu2(Fe)
Flammability	UL 94	HB	V0
Recommended Min/Max Temperature		-30° to +90°C	-40° to +120°C	Up to +400°C

Pipe clamp body

Electrical Properties	Test Method	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black	Aluminum Alloy EN AB-ALSi11Cu2(Fe)
Volume Resistivity	DIN 53482	10¹⁸ Ω·cm	10¹⁵ Ω·cm

Pipe clamp body

Chemical Properties	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black
Weak Acid - Alkaline Solution	Limited resistance	Good resistance
Gasoline - Mineral Oils	Good resistance	Good resistance
Alcohol - Other Oils - Seawater	Good resistance	Good resistance

Metal components

Material Type	Standard	Tensile Strength Rm (N/mm²)	Hardness
Aluminum Alloy EN AB-AISi11Cu2(Fe)	EN AB - 46100	265-295	80 HBS
Steel Fe 360 (S235JR)	UNI EN - 10025	360-510
Steel Fe 430B	UNI EN - 10025	330
Steel Fe P11	UNI EN 10111	360-390	70 HRB
Steel AVP (11 SMn Pb 37)	UNI EN 10227-3	380-700	179 HB
Stainless Steel AISI 316 L (X2CrNiMo17-12-2)	UNI EN 10227-3 / UNI EN 10088-2	530-680
Zamak	UNI EN 3718

Materials used

Product	Material	Article Type
Clamp	Copolymer Polypropylene “PP” High resistance and tensile strength
	Polyamide “PA” Glass fiber reinforced and self-extinguishing	Standard series - “CF” series - “S” series and Heavy series
	Aluminum Alloy EN AB-AISi11Cu2(Fe)	Standard series - Heavy series
	Steel FE 430 B	Super Heavy series
Bushings and O-rings	Rubber compound NBR 70	Art. AG - BG
Plates and Accessories	Stainless Steel AISI 316L	Specified products
	Steel Fe 360	Art. BB
	Steel Fe 430B	Art. P CP - PS CP - CDPS CP - CDP CP - PB CP - PA - PAM - CL - CM - CP - CQ/L/M/P
	Steel Fe P11	Art. P - PL - PS - PB - PD - PM - PM..1P - PM..2P - PCF - PSCF - PBCF - PMCF - PP - PPM - BBP
	Steel AVP	Art. VA - B - DF P
Zamak	Art. DF M06 - DF M08
Surface Treatment	All metal components are electrolytically zinc-plated. Fe ZN 8 c (white), Fe ZN 8 c 2C (yellow). Only the bearing rail “BB” is “SENDIZIMIR” zinc-plated.

Technical information pipes and pipe clamps

Quicklinks: Clamp measurements | Clamp distancing | Tightening torque

Clamp measures

All measurements are given in milimetres.

Standard series

Type	Ø	b	c	d	h
C2	6-12	28	28	-	0,6
C3	14-18	37	28	20	0,6
C4	20-25	50	36	33	0,8
C5	28-32	57	44	40	1
C6	35-42	69,5	57	52	1

Heavy series

Type	Ø	b	c	d	f	g	h	i
CP1	12-20	58	33	33	30	70	1	8
CP2	22-30	72	49	45	30	87	1	8
CP3	30-45	87	60	60	30	105	1,2	8
CP4	38-70	120	88	90,5	45	155	2	10
CP5	73-90	155	118	122	60	200	3	10
CP6	100-121	205	165	168	80	225	3	15
CP7	133-168	245	200	205	80	270	4	15
CP8	168-219	320	270	265	120	340	4	25
CP9	219-324	470	410	395	160	520	10	30

Double clamp

Type	Ø	b	c	d	e	f	i
CF1	6-12	36	27	20	37	0,6	4
CF2	14-18	54	26	29	55	0,8	4
CF3	20-25	67	37	36	70	1	4
CF4	28-30	81	42	45	85	1	4
CF5	35-42	106	53	56	110	1,2	4

Recommended distances for pipe clamps

Standard and double clamp

Clamp type	Pipe diameter (mm)	Spacing – L (m)
Group 1	6–12.25	0.9
Group 2	6–13.25	1.0
Group 3	14–18	1.2
Group 4	20–25.4	1.5
Group 5	28–32	1.5
Group 6	32–45	2.2
Group 7	45–54	2.7
Group 8	57.2–76.1	3.2
Group 9	88.9–102	4.0

Heavy series

Clamp type	Pipe diameter (mm)	Spacing – L (m)
Group 1	6–20	1.0
Group 2	20–30	1.5
Group 3	30–45	2.2
Group 4	38–50	2.2
Group 4	53–70	3.0
Group 5	65–73	3.0
Group 5	80–90	3.5
Group 6	100–121	4.5
Group 7	133–168	5.0
Group 8	168–219	6.0
Group 9	166–220	6.7

Tightening torque and maximum load in the direction of the pipe

All torque and pipe loads in flow direction are valid for clamping tested on steel pipes ST 35.4 with cover type "PS" and hexagon nut UNI 5737.

Sliding commences on reaching value "P".

Pipe clamp Standard series

		Polypropylene		Self-extinguishing polyamide		Aluminum
Type	Bolt	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)
C1	M6	8	0.7	10	0.7	12	3.6
C2	M6	8	1.2	10	0.9	12	4.3
C3	M6	8	1.5	10	1.0	12	4.4
C4	M6	8	1.7	10	1.8	12	4.8
C5	M6	8	1.8	10	1.9	12	5.2
C6	M6	8	2.0	10	2.1	12	7.5
C7	M6	8	2.2	10	2.8	12	9.0
C8	M6	8	2.3	10	2.5
C9	M6	8	2.4	10	2.5

Pipe clamp heavy series

		Polypropylene		Self-extinguishing polyamide		Aluminum
Type	Bolt	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)
CP1	M10	13	1.8	21	4.5	32	13.0
CP2	M10	13	3.0	21	4.7	32	16.0
CP3	M10	15	3.5	25	5.2	37	16.5
CP4	M12	30	8.5	40	9.5	55	30.5
CP5	M16	46	11.5	56	27.0	125	36.4
CP6	M20	80	15.0	155	25.0	225	71.7
CP7	M20	100	30.0	185	34.0	235	62.5
CP8	M30	190	41.0	360	50.0	500	86.7
CP9	M30	210	125.0	380	130.0	500	190.5

Pipe clamp double clamp

		Polypropylene		Self-extinguishing polyamide
Type	Bolt	Tightening torque (Nm)	Max load directly on tube, P (kN)	Tightening torque (Nm)	Max load directly on tube, P (kN)
CF1	M6	6	1.1	6	1.1
CF2	M8	13	2.5	13	2.5
CF3	M8	13	2.1	13	2.1
CF4	M8	13	2.9	13	3.1
CF5	M8	9	2.2	9	2.7

Pipe clamp body

Mechanical Properties	Test Method	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black	Aluminum Alloy EN AB-ALSi11Cu2(Fe)
Bending Strength	DIN 53452	43 N/mm²	230 N/mm²	70 N/mm²
Impact Strength	DIN 53453	11 kJ/m²	40 kJ/m²	-
Compression Strength	ASTM D 695	12,000 N/mm²	160 N/mm²	HB 500 up to 600 N/mm²
Modulus of Elasticity	DIN 53452	1,400 N/mm²	9,000 N/mm²	68,000 up to 78,000 N/mm²
Tensile Strength	DIN 53455	35 N/mm²	160 N/mm²	170 up to 220 N/mm²

Pipe clamp body

Thermal Properties	Test Method	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black	Aluminum Alloy EN AB-ALSi11Cu2(Fe)
Flammability	UL 94	HB	V0
Recommended Min/Max Temperature		-30° to +90°C	-40° to +120°C	Up to +400°C

Pipe clamp body

Electrical Properties	Test Method	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black	Aluminum Alloy EN AB-ALSi11Cu2(Fe)
Volume Resistivity	DIN 53482	10¹⁸ Ω·cm	10¹⁵ Ω·cm

Pipe clamp body

Chemical Properties	Copolymer Polypropylene “PP” High resistance and tensile strength 3060MN5	Polyamide “PA” Glass fiber reinforced and self-extinguishing AG5 FR PH2 0160 Black
Weak Acid - Alkaline Solution	Limited resistance	Good resistance
Gasoline - Mineral Oils	Good resistance	Good resistance
Alcohol - Other Oils - Seawater	Good resistance	Good resistance

Metal components

Material Type	Standard	Tensile Strength Rm (N/mm²)	Hardness
Aluminum Alloy EN AB-AISi11Cu2(Fe)	EN AB - 46100	265-295	80 HBS
Steel Fe 360 (S235JR)	UNI EN - 10025	360-510
Steel Fe 430B	UNI EN - 10025	330
Steel Fe P11	UNI EN 10111	360-390	70 HRB
Steel AVP (11 SMn Pb 37)	UNI EN 10227-3	380-700	179 HB
Stainless Steel AISI 316 L (X2CrNiMo17-12-2)	UNI EN 10227-3 / UNI EN 10088-2	530-680
Zamak	UNI EN 3718

Materials used

Product	Material	Article Type
Clamp	Copolymer Polypropylene “PP” High resistance and tensile strength
	Polyamide “PA” Glass fiber reinforced and self-extinguishing	Standard series - “CF” series - “S” series and Heavy series
	Aluminum Alloy EN AB-AISi11Cu2(Fe)	Standard series - Heavy series
	Steel FE 430 B	Super Heavy series
Bushings and O-rings	Rubber compound NBR 70	Art. AG - BG
Plates and Accessories	Stainless Steel AISI 316L	Specified products
	Steel Fe 360	Art. BB
	Steel Fe 430B	Art. P CP - PS CP - CDPS CP - CDP CP - PB CP - PA - PAM - CL - CM - CP - CQ/L/M/P
	Steel Fe P11	Art. P - PL - PS - PB - PD - PM - PM..1P - PM..2P - PCF - PSCF - PBCF - PMCF - PP - PPM - BBP
	Steel AVP	Art. VA - B - DF P
Zamak	Art. DF M06 - DF M08
Surface Treatment	All metal components are electrolytically zinc-plated. Fe ZN 8 c (white), Fe ZN 8 c 2C (yellow). Only the bearing rail “BB” is “SENDIZIMIR” zinc-plated.