Clamps

A clamp is a connecting element used to secure and fix joints of pipes, hoses, and cables, for their installation and repair. It also performs a sealing function. It consists of two semicircular parts closed into a circle by means of screw ties. The clamp was originally invented for automobiles, where engine hoses needed to be reliably secured. Later the materials and design were improved, and today clamps are widely used across all industries. They are indispensable for plumbing work, especially metal-rubber clamps, for installing heating pipes, sewage systems, for joining metal pipes without welding, and for many other tasks.

Clamp types and standards

There is a wide variety of clamp types. They are classified by two main categories.

1. Material

• Metal.
• Metal-rubber.
• Plastic (nylon).

By metal type, clamps are divided into:

• zinc-plated steel;
• stainless steel, usually made from AISI430, AISI304, and AISI316 grade steels.

2. Design and purpose of clamps

• Detachable and non-detachable.
• Worm-drive — band clamps with a worm mechanism. These are band fasteners with a screw.
• Spiral — a design for reinforced hoses with an external spiral.
• Heavy-duty — the screw and band are welded into one piece. Designed for use under increased pressure and load.
• Pipe clamps — bracket-shaped clamps for securing pipes to walls.
• Spring — for securing elastic hoses in heating and cooling systems. Made from spring steel, they are resilient and require no tightening. Used in high-vibration conditions.
• Nylon ties — plastic cable clamps of various sizes, used for bundling wires and cables.

Standard sizes have been developed for each product type. For example, worm-drive clamps have the following dimensions in mm: diameter from 8 to 480, width 7.5, 9, 12.

Standards

The production and specifications of clamps are governed by DIN and GOST standards.

DIN 3017-1, type A

Worm-drive band clamp used for securing hoses, sleeves, and tubes. Made of stainless steel A2/A4 (equivalent to AISI 304/AISI 316) or galvanized steel. The worm mechanism has no perforations; clamping is provided by a ribbed band and a screw. Clamping range from 8-16 to 80-100 mm.

Material designations:

• W1 — zinc-plated steel;
• W2 — band and housing made of stainless steel 1.4016, screw made of zinc-plated steel;
• W3 — stainless steel 1.4016;
• W4 — stainless steel 1.4301;
• W5 — stainless steel 1.4401, 1.4436, 1.4571.

DIN 3017 corresponds to Russian GOST 28191-89.

DIN 2817

Heavy-duty clamp with four bolts for securing rigid reinforced hoses and sleeves under increased pressure, temperature fluctuations, and hydraulic shocks with strong vibration. The design reliably holds and seals the joint.

DIN 3016

Clamp with rubber insulation for plumbing work, securing air-conditioning tubing, and electrical cables. Made of steel, coated with white zinc. Fastening is done using clamping ties.

DIN 3570

Describes the technical specifications of pipe clamps manufactured in a U-shape with threaded ends. Designed for securing pipes with a diameter in the range of 14-540 mm. Equivalent — GOST 24137-80.

In addition to those listed, the following standards are also used in Russia:

GOST 17679-80

Governs the specifications of lightweight clamps for securing pipelines and cables.

GOST 24140-80

Governs the production of zinc-plated clamps with rubber gaskets in a diameter range of 4-540 mm.

How to order and buy

The site catalogue lets you find the items you need by filtering products by category and parameters. The online fastener and hardware weight calculator speeds up order calculations.

There are several ways to place an order. You can select items in the catalogue, add them to the cart, and place the order. The “Send request” button opens a form where you need to provide a contact person and preferred way to be reached — a sales manager will contact you to advise on product availability. You can also use the request form to discuss manufacturing items according to a sketch or drawing. Alternatively, call the toll-free number or request a callback on the site.

Delivery is arranged directly in the cart by selecting the appropriate option.

SKU	Type	Outer pipe ø, mm	Package, pcs	Weight, kg/1000 pcs
41201	KUPI 12	12	100 / 1000	2.5
41202	KUPI 15	15 / PG 9	100 / 1000	2.9
41203	KUPI 18	18 / PG 11	100 / 1000	3.5
41204	KUPI 20	20 / PG 13.5	100 / 1000	4.2
41205	KUPI 22	22 / PG 16	100 / 1000	4.9
41206	KUPI 25	25	50 / 500	5.3
41208	KUPI 31	31	50 / 500	7.5
41209	KUPI 36.5	36.5 / PG 29	50 / 500	9.6

b	d	B	h	L	s	s (W1 only)	W1	W2	W3	W4	W5
7.5	8 - 12	11.5	9.2	17.6	0.6			×	×
7.5	10 - 16	11.5	9.2	17.6	0.6			×	×
7.5	12 - 18	11.5	9.2	17.6	0.6			×	×
9	8 - 12	13	11	21	0.7	0.8	×
9	8 - 16	13	11	21	0.7			×	×	×	×
9	10 - 16	13	11	21	0.7	0.8	×
9	12 - 18	13	11	21	0.7	0.8	×
9	12 - 22	13	11	24	0.7			×	×	×	×
12	16 - 27	13	11	24	0.7	0.8	×	×	×	×	×
9	20 - 32	13	11	24	0.7	0.8	×	×	×	×	×
9	25 - 40	13	11	26	0.7	0.8	×	×	×	×	×
9	30 - 45	13	11	26	0.7	0.8	×	×	×	×	×
9	35 - 50	13	11	26	0.7	0.8	×	×	×	×	×
9	40 - 60	13	11	26	0.7	0.8	×	×	×	×	×
9	50 - 70	13	11	26	0.7	0.8	×	×	×	×	×
9	60 - 80	13	11	26	0.7	0.8	×	×	×	×	×
9	70 - 90	13	11	26	0.7	0.8	×	×	×	×	×
9	80 - 100	13	11	26	0.7	0.8	×	×	×	×	×
9	90 - 110	13	11	26	0.7	0.8	×	×	×	×	×
9	100 - 120	13	11	26	0.7	0.8	×	×	×	×	×
9	110 - 130	13	11	26	0.7	0.8	×	×	×	×	×
9	120 - 140	13	11	26	0.7	0.8	×	×	×	×	×
9	130 - 150	13	11	26	0.7	0.8	×	×	×	×	×
9	140 - 160	13	11	26	0.7	0.8	×	×	×	×	×
b	d	B	h	L	s	s (W1 only)	W1	W2	W3	W4	W5
12	16 - 27	14.6	12.5	30	0.8	0.8	×	×	×	×	×
12	20 - 32	14.6	12.5	30	0.8	0.8	×	×	×	×	×
12	25 - 40	14.6	12.5	30	0.8	1.0	×	×	×	×	×
12	30 - 45	14.6	12.5	30	0.8	1.0	×	×	×	×	×
12	35 - 50	14.6	12.5	30	0.8	1.0	×	×	×	×	×
12	40 - 60	14.6	12.5	30	0.8	1.0	×	×	×	×	×
12	50 - 70	14.6	12.5	30	0.8	1.0	×	×	×	×	×
12	60 - 80	14.6	12.5	30	0.8	1.0	×	×	×	×	×
12	70 - 90	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	80 - 100	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	90 - 110	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	100 - 120	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	110 - 130	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	120 - 140	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	130 - 150	14.6	12.5	36	0.8	1.0	×	×	×	×	×
12	140 - 160	14.6	12.5	36	0.8	1.0	×	×	×	×	×
b	d	B	h	L	s	s (W1 only)	W1	W2	W3	W4	W5