BIS and ISI Standards for Rubber Hoses in India: IS 443, IS 444, IS 7654 and Others Explained

Every tender, purchase order and dealer catalogue in India eventually asks the same question: which Indian Standard does this hose conform to? The BIS standards for rubber hoses published by the Bureau of Indian Standards define how water, air, steam, hydraulic and LPG hoses must be built and tested. Buyers who understand the numbers can compare quotations on a like-for-like basis, reject sub-standard supply and satisfy their own auditors and insurers.

This guide explains what the Bureau of Indian Standards is, how the ISI mark works, and what the most frequently quoted hose standards actually cover. It also explains how BIS standards for rubber hoses relate to the SAE, ISO and EN specifications that appear on imported hose, so that plant engineers, contractors and dealers can specify with confidence.

What Are BIS Standards for Rubber Hoses?

The Bureau of Indian Standards (BIS) is the national standards body of India, functioning under the BIS Act 2016. It publishes Indian Standards (IS) through technical committees made up of manufacturers, users, testing laboratories and government departments, with rubber hose standards prepared by the rubber products sectional committees.

An Indian Standard for a hose usually sets out the same core elements:

• Scope — the fluid, service and temperature range the hose is intended for
• Construction — the tube, reinforcement and cover materials permitted
• Dimensions — nominal bore, tolerances, wall thickness and minimum bend radius
• Performance — working pressure, proof pressure, burst pressure, adhesion, ageing and ozone resistance
• Marking — what must be printed on the hose, including the standard number, size, pressure and manufacturer identification

Conformity to an Indian Standard is voluntary unless a product is brought under a compulsory certification order. The ISI mark, discussed below, is the visible sign that a manufacturer holds a BIS licence for that standard. For a broader look at why certificates matter when choosing a vendor, see our guide on why certification matters when selecting a rubber hose supplier.

What Does the ISI Mark Mean on a Hose?

The ISI mark is the certification mark of BIS, carried over from the Indian Standards Institution that preceded it. A manufacturer applies for a licence against a specific Indian Standard; BIS inspects the factory, checks testing equipment and quality records, tests samples independently and grants a licence with a unique CM/L number, followed by ongoing surveillance.

For buyers, three points matter. The ISI mark is granted per product and per standard, so a factory licensed for water hose is not automatically licensed for hydraulic hose. The licence number printed beside the mark can be verified on the BIS website. And a hose can be manufactured to an Indian Standard without carrying the mark, in which case the manufacturer’s test certificate is the evidence of conformity.

The Most Important Indian Standards for Industrial Hoses

The numbers below appear most often in Indian tenders and OEM drawings. Always check the current edition and amendments on the BIS portal before quoting a standard in a contract.

IS 443 — Methods of Sampling and Test for Rubber Hoses

IS 443 is not a product specification. It defines how hoses are sampled and tested: dimensions, hydrostatic proof and burst tests, adhesion between layers, ageing, low temperature flexibility and ozone resistance. Almost every product standard in the hose series refers back to IS 443 for its test procedures.

IS 444 — Rubber Hoses for Water

IS 444 covers general purpose textile reinforced rubber water hose for construction, agriculture, workshops and municipal use. It classifies hoses by working pressure and specifies tube and cover quality, dimensions and marking. Buyers of tanker, washing and utility hose commonly quote it.

IS 446 — Rubber Hoses for Compressed Air

IS 446 applies to textile reinforced rubber hose for compressed air supply to pneumatic tools and plant. It sets working pressure classes, requires an oil resistant cover where specified and includes electrical conductivity options for hazardous areas. It is the usual reference for pneumatic hose in Indian workshops and mines.

IS 7654 — Wire Braid Reinforced Hydraulic Hoses

IS 7654 is the Indian Standard for rubber hydraulic hose reinforced with high tensile steel wire braid. Its types correspond broadly to the international single and double braid grades, so IS 7654 Type 1 and Type 2 are comparable in construction to SAE 100 R1 and R2. The standard specifies bore sizes, working and burst pressures, impulse and proof testing and tube oil resistance, and is the standard most often quoted for tractor trolley, earthmoving and machine tool hydraulic hose in India. Our complete hydraulic hose pipe guide explains how these grades are selected in practice.

IS 10655 — Rubber Hoses for Saturated Steam

IS 10655 covers hose for saturated steam, defining heat resistant tube compounds, reinforcement and the pressure and temperature limits for each class. Because steam hose failure is a serious burn hazard, marking requirements ensure it is not mistaken for water or air hose. Read our guide on what temperature and pressure ratings a high pressure steam hose should have for the operating limits in detail.

IS 9573 — Rubber Hoses for LPG

IS 9573 specifies rubber hose for liquefied petroleum gas in domestic and industrial installations. LPG hose has been brought under compulsory BIS certification, so a valid ISI mark is required for sale in India. The standard limits permeability, requires gas resistant compounds and sets pressure and ageing tests suited to the hazard.

How Indian Standards Relate to SAE, ISO and EN

Many Indian hose standards are adoptions of, or harmonised with, ISO standards. BIS may publish an identical adoption with a dual number, or an Indian version with extra requirements suited to local conditions such as higher ambient temperatures. For hydraulic hose, the international references are SAE J517 and ISO 1436 for wire braid hose and ISO 3862 for spiral hose; IS 7654 sits in the same family.

In practice, most Indian OEMs accept either the Indian Standard or the equivalent international grade, provided the test certificate shows the hose meets the required working pressure, burst pressure and impulse life. When a drawing quotes SAE 100 R2, hose supplied to IS 7654 Type 2 with a matching certificate is normally acceptable, but confirm this in writing. For a side-by-side view of the braided grades, see SAE 100 R1 vs R2 hydraulic hose comparison and pressure chart.

How Buyers Should Check Conformity

Quoting a standard on a purchase order is only the first step. Conformity should be backed by evidence, and the following checks take only a few minutes:

• Marking — the hose should carry the standard number, nominal bore, working pressure, manufacturer’s name or code and, where applicable, the ISI mark with licence number, printed continuously along the cover
• Licence verification — search the CM/L number on the BIS portal to confirm it is valid and covers the product and size range supplied
• Test certificate — ask for a batch test certificate showing proof pressure, burst pressure and, for hydraulic hose, impulse results, all against the values in the standard
• Third-party reports — for critical services, request a report from a BIS-recognised or NABL-accredited laboratory rather than relying on in-house testing alone

The full list of current standards, amendments and licensed manufacturers is available through the Bureau of Indian Standards. For the wider set of safety requirements that hoses must satisfy in plants and on machinery, our article on safety standards every industrial hose pipe must meet is a useful companion.

Choose Standards-Compliant Rubber Hoses from Mangla Rubber Industries

Mangla Rubber Industries manufactures industrial and hydraulic hoses to the relevant Indian and international standards, including high pressure hydraulic hose to SAE 100 R2 and the equivalent IS 7654 Type 2, along with water, air, steam and chemical hoses for plants, dealers and OEMs across India. Every batch is pressure tested and supplied with a test certificate on request.

If your tender or drawing quotes a specific IS, SAE, ISO or EN standard, share the document with our technical team and we will confirm the matching construction, test values and marking. Contact Mangla Rubber Industries to request a quotation.

Conclusion

Understanding BIS standards for rubber hoses allows Indian buyers to specify precisely, compare suppliers fairly and verify what has been delivered. IS 443 provides the test methods, while IS 444, IS 446, IS 7654, IS 10655 and IS 9573 define the products themselves. Quote the standard with its type or class, ask for the marking and test certificate, and verify any ISI licence on the BIS portal. Combined with a manufacturer who tests every batch, these habits keep hose failures, disputes and safety incidents to a minimum.

Frequently Asked Questions

Is the ISI mark compulsory for all rubber hoses in India?

No. Most industrial hoses are under voluntary certification, meaning a manufacturer may choose whether to apply for a licence. Certain hazardous products, such as LPG hose under IS 9573, are covered by compulsory certification orders and must carry a valid ISI mark.

What is the difference between IS 443 and IS 444?

IS 443 describes the sampling and test methods used for rubber hoses generally, while IS 444 is a product specification for general purpose rubber water hose. A water hose is manufactured to IS 444 and tested using the procedures in IS 443.

Is IS 7654 hose equivalent to SAE 100 R1 or R2?

IS 7654 covers wire braid reinforced hydraulic hose in types that correspond broadly to single braid SAE 100 R1 and double braid SAE 100 R2 construction. Pressure ratings are similar, but always compare the test certificate against the drawing requirement before substituting one for the other.

How can I verify a BIS licence number on a hose?

The CM/L number printed with the ISI mark can be searched on the BIS website, which shows the licensee, the standard covered and whether the licence is currently valid. Check that the product and size range supplied fall within the scope of that licence.

Which Indian Standard applies to steam hose?

IS 10655 covers rubber hoses for saturated steam and defines the heat resistant tube, reinforcement and pressure classes. Steam hose should never be substituted with water or air hose, whatever standard those hoses carry.