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Shenyang Wensheng Instrument manufactures full-series The cleaning pig for domestic and cross-border oil, gas, chemical, subsea and water pipelines, complying with Chinese DN and international inch standards. Its pigs adopt two core parts: five elastic polyurethane sealing materials for diverse temperatures and media, plus four metal skeleton types matching various corrosive environments. Covering DN50–DN1400, standard sizes are in stock while large calibers support customized production with short lead times. All products come with bilingual inspection certificates, suited for global projects across Southeast Asia, Russia, the Middle East, Europe and America with full export service.

This document details Shenyang Wensheng’s complete cleaning pig lineup, covering seven standard models and four proprietary patented products with structural traits, performance metrics and applicable scenarios. Its products include rubber, foam, cup, disc, elastic scraper, magnetic pigs and patented telescopic, gel, measuring, bidirectional pigs, covering DN50–DN1400 pipelines. Suitable for oil, gas, urban water and refinery projects, they handle descaling, wax stripping, slag adsorption and pipeline inspection with adjustable interference, pressure resistance and long service life. Modular, trackable and customisable designs adapt to complex, variable-diameter and low-temperature pipelines. All core specs are tabulated, and bespoke manufacturing is supported per project demands.

Polyurethane Cup Pig application and precautions

Introduce the role, type and working principle of pig