Vacuum-packed low-hydrogen electrode

E7018-1 H4R welding electrodes for UAE fabrication and maintenance.

KHANDU supplies the proven 4.0 mm E7018-1 H4R configuration in vacuum packaging, subject to the manufacturer's certificate, packaging integrity and the customer's WPS and project requirements.

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Product overview

Understanding E7018-1 H4R

E7018-1 H4R combines the E7018-1 low-temperature impact requirement with an H4 diffusible-hydrogen limit and an R moisture-resistance designation. The supplied product is vacuum packed to help preserve its factory-dry condition before opening.

Classification framework: AWS A5.1 E7018-1 H4R
Welding process: SMAW / MMA
Product form: Basic-coated, low-hydrogen covered electrode · vacuum packed

Why this configuration matters

Enhanced low-temperature toughness: AWS E7018-1 H4R requires a minimum 27 J Charpy V-notch value at -46°C.
Low diffusible hydrogen: H4 limits diffusible hydrogen to a maximum of 4 mL per 100 g of deposited weld metal, supporting hydrogen-cracking control when the complete welding procedure is followed.
Moisture resistance: the R suffix identifies an electrode that meets the AWS absorbed-moisture requirement.

Packaging and handling

Vacuum packaging helps protect the electrodes from moisture during transport and storage while the seal remains intact.
Confirm pack size, vacuum integrity, allowed exposure time after opening and the manufacturer's holding or re-drying instructions.
Confirm the base material, required strength, impact-test temperature, WPS, certificate scope and project acceptance criteria.

RFQ checklist

Complete AWS A5.1 classification: E7018-1 H4R.
Diameter, welding position, current and mechanical property requirements.
Vacuum pack size, storage procedure and allowed exposure time after opening.
Certificates, trial quantity and UAE delivery location.

Selection before supply

The complete E7018-1 H4R designation, vacuum packaging, certificate consistency, usability and customer acceptance all matter. KHANDU checks manufacturer documents and customer testing feedback before regular supply.

Submit E7018-1 H4R RFQ How we select