Testing labs in Stamford

Arrowhead Industrial Services is a specialist independent inspection and testing company operating on a global basis from offices and laboratories in the United Kingdom, Portugal, the United States, and China. The company's core mission is to minimise the risks associated with the manufacturing and transportation of high- and low-pressure compressed gas containers, serving manufacturers, operators, importers, and distributors who require authoritative third-party certification and conformity assessment for pressure receptacles up to 3,000 litres in capacity. Clients across the industrial gas, chemical transport, cryogenics, breathing apparatus, and fire protection sectors rely on Arrowhead for technically rigorous, internationally recognised inspection and approval services that allow their products to be placed legally on regulated markets worldwide. Arrowhead's primary service domain is pressure receptacle inspection, encompassing Type Approval, Conformity Assessment, and periodic re-inspection. As an Approved Body and Independent Inspection Agency, the company is authorised to conduct direct inspection of pressure vessels or to perform surveillance of in-house inspection services operated by manufacturers. These capabilities allow Arrowhead to support clients at every stage of the product lifecycle — from initial design examination and material approval through manufacture inspection, first placement on the market, and ongoing periodic inspection and recertification. The company inspects and certifies cylinders, tubes, pressure drums, cryogenic pressure receptacles, cylinder batteries, and cylinder frames used in the carriage of gases. In its capacity as a European Notified Body recognised by the European Commission, Arrowhead Industrial Services EU (AISEU) operates under the Transportable Pressure Equipment Directive (TPED, 2010/35/EU). This directive governs transportable pressure equipment — new and existing vessels, associated valves, and accessories — used for the transport of dangerous goods within the European Union. Under TPED and the European Agreement on the International Carriage of Dangerous Goods by Road (ADR), AISEU is authorised to inspect, test, and certify pressure receptacles; grant type approvals; and perform periodic inspections. Equipment certified under this framework bears the Pi-mark (conformité mark), authorising manufacturers to place products on the EU market. Certified equipment types include cylinders and cylinder frames for ADR 6.2 classification, as well as cryogenic and high-pressure transport vessels. Arrowhead is additionally a Notified Body for the Pressure Equipment Directive (PED, 2014/68/EU), which covers stationary pressure equipment and assemblies new to the Union market operating at pressures exceeding 0.5 bar. The company conducts conformity assessment across all applicable PED risk categories — I, II, III, and IV — and provides design examination, material approval, and manufacture inspection services. This scope includes cylinders used as breathing apparatus (diving cylinders, SCBA equipment) and portable fire extinguishers up to 20 kg placed on the EU market. Upon successful assessment, Arrowhead issues certification enabling manufacturers to affix the CE mark to their products. The company supports both initial certification pathways and recertification of existing equipment, and can guide manufacturers through the appropriate conformity route for their specific product and risk category. Accreditation provides the formal foundation for all of Arrowhead's inspection and certification activities. Arrowhead Industrial Services EU (AISEU) holds accreditation to ISO/IEC 17020:2012 as an Inspection Body and to ISO 17065:2012 as a Product Certification Body — the internationally recognised standards governing competence, impartiality, and consistent operation of bodies performing these roles respectively. Arrowhead Industrial Services Ltd (the UK legal entity) is separately accredited to ISO 17020:2012. These accreditations are maintained under published Schedules of Accreditation and are subject to ongoing surveillance, providing clients with confidence in the company's technical competence and independence from commercial pressures. The company maintains a geographically diverse network of offices and laboratories to serve clients across multiple regulatory jurisdictions. UK headquarters are at Orion House, Barn Hill, Stamford, Lincolnshire (tel: +44 1778 243500). European operations are based at the Aveiro Business Center, Aveiro, Portugal (tel: +351 234 290 295). US operations include a corporate office and laboratory in Graham, North Carolina, and a Western Regional office and laboratory in Riverside, California (tel: +001 951 778 1585). China offices are located in Jinan City, Shandong Province, and Shanghai Changning district (tel: +86 15953101903), extending Arrowhead's reach into the major Asia-Pacific manufacturing centres for pressure equipment. Arrowhead Industrial Services is positioned as a strategic certification partner for manufacturers, importers, and operators of compressed gas containers and pressure vessels who must navigate complex international regulatory frameworks simultaneously. Its dual status as a Notified Body under both TPED and PED, combined with multi-site inspection laboratory infrastructure across Europe, North America, and Asia, and accreditation to ISO 17020 and ISO 17065, makes it a capable single-source provider for type approval, conformity assessment, and periodic inspection across the EU and beyond. Whether a client is bringing pressure equipment to market for the first time, recertifying an existing approved product, or establishing a surveillance programme for in-house inspection operations, Arrowhead offers the regulatory expertise and accredited infrastructure to support a compliant and efficient certification pathway.