BIS Certification for Hot Dip Galvanized Stay Strand

Look at almost any electricity pole on an Indian roadside and you will see a taut steel strand running diagonally from near the top of the pole down to an anchor in the ground. That is stay strand - the guy wire that holds poles, masts and light towers upright against wind, conductor tension and time. It is made of galvanized steel wires stranded together, and its whole job is to hold a constant, decades-long tensile load outdoors in every kind of weather. IS 2141:2000 governs it, and it is now under compulsory BIS certification.

Two properties decide everything for this product: the tensile strength of the strand (it is permanently loaded, with weather loads on top) and the hot-dip zinc coating (a rusted stay is a failed stay, and nobody re-inspects a village pole's guy wire for years at a time). The buyers are exactly who you would guess - power distribution companies, telecom infrastructure firms and railways - all tender-driven, all ISI-checking.

Knowing exactly where your product sits within the standard saves time and money at the testing stage. The practical scope:

India's pole-and-mast infrastructure depends on it:

Testing centres on permanent outdoor tensile duty:

This order is strict on exemptions. There is essentially one exemption: goods manufactured domestically purely for export. There is no exemption for goods imported as a component of a finished product, and no small-unit turnover exemption - Micro and Small Enterprises were only given later compliance dates (1 June 2025 and 1 March 2025 respectively), and both of those dates have now passed. Today the order applies with full force to every manufacturer, of every size, selling into India.

BIS expects documentation in three broad groups. Getting the format right is the single biggest cause of delay for first-time applicants, which is exactly the part we take off your plate:

• Administrative: company registration, factory licence, trademark proof, and - for foreign makers - the Authorized Indian Representative appointment.
• Technical: product drawings and construction details, raw-material details (rope cores and wires are themselves checked against their own standards), machinery list, in-house test equipment list, and the recognised-lab test report.
• Quality control: the quality manual, competent QC personnel details, and the process and quality-control flow for the product.

The route depends on where your factory is. Indian manufacturers follow the domestic Scheme-I process - sample testing, documentation and a factory assessment before the licence is granted (official standard timeframe is about 30 days for a fully-prepared file; realistically plan for a few weeks to a few months). The step-by-step is on our BIS Certification for Indian Manufacturers page. Manufacturers outside India go through FMCS with an Authorized Indian Representative and typically an overseas factory audit (standard timeframe about 180 days) - see our FMCS guide.

Once the licence is granted, BIS issues a unique licence number (the CM/L number). The ISI Mark together with that CM/L number must be applied to the product and its packaging in the manner the standard prescribes - for ropes this typically travels with the reel/coil tag and test certificate that buyers and inspectors check. Selling a notified product that carries no mark, or a mark without a valid licence behind it, is treated as non-compliance.

The Bureau of Indian Standards is the certifying and enforcing authority for this product, and non-compliance is dealt with under the BIS Act, 2016:

• Seizure of stock from the factory, warehouse or distribution chain.
• Customs detention of imported consignments that arrive without a valid licence and marking.
• Fines and imprisonment as provided under the BIS Act, 2016 - for a first offence, imprisonment up to two years or a fine of at least two lakh rupees, rising steeply for repeat offences.
• Loss of tenders and contracts - mining houses, elevator OEMs, oil companies, utilities and infrastructure EPCs require the ISI Mark as a precondition.

This order spans nine very different products - crane ropes, elevator ropes, mine ropes, oil-well lines, stay strand, a nylon life-safety rope, barbed wire and gabion mesh - each under its own Indian Standard with its own test regime, and several tied to safety-critical, regulator-watched industries. We work across the entire order as specialists, prepare every document to exact BIS format, and coordinate lab testing and the factory assessment so your file keeps moving - whether your plant is in India or overseas.