Service Content
Filament-wound FRP vertical storage tanks are valued for corrosion resistance, low density and good monolithic formability, and are widely used in the chemical, water-treatment, food and petrochemical industries to store acid/alkaline media and process liquids. The tank wall comprises a resin-rich liner, a structural winding layer and an outer protective layer; its tightness, structural strength and cure quality determine storage safety and service life. Following the ISO 14692 concept together with GB/T and ASTM standards, the LEISA Technology laboratory performs "full-parameter" third-party testing of vertical tanks, covering appearance, dimensions and wall thickness, Barcol hardness, resin content, axial/hoop tensile strength, flexural strength, apparent interlaminar shear strength, leak tightness, glass transition temperature and water absorption, providing a complete basis for product acceptance and in-service assessment.
Test Items
- Appearance quality: inner/outer wall defects, liner integrity and fibre wet-out, per the product standard.
- Dimensions and wall thickness: diameter, height and layer thickness distribution, per GB/T 8806.
- Barcol hardness: degree of resin cure, per GB/T 3854, ASTM D2583.
- Resin content: reinforcement ratio by loss on ignition, per GB/T 2577, ASTM D2584.
- Axial/hoop tensile strength: wall tensile strength and modulus, per GB/T 1447.
- Flexural strength: wall flexural strength, per GB/T 1449.
- Apparent interlaminar shear strength: winding-layer interface bond, per GB/T 1450-1.
- Leak tightness: water/pressure tightness of tank and nozzles, per the product standard.
- Glass transition temperature (Tg): resin upper temperature limit, per GB/T 19466-2, ISO 11357-2.
- Water absorption: liner resistance to media permeation, per GB/T 1462.
Service Process
- Sample/tank receipt and registration: record volume, media, resin system and process.
- Plan confirmation: define a full-parameter plan per tank use and applicable standard.
- Specimen preparation: take hoop, axial and compositional specimens from the wall and condition them.
- Testing: complete mechanical, cure, tightness and compositional tests.
- Data processing and review: judge conformity, assess structural margin and review.
- Report delivery: issue the report with material-selection and process advice.
Advantages
- Full-parameter coverage: appearance to mechanics to media resistance in one pass.
- Corrosion focus: emphasis on liner cure and water-permeation risk.
- International alignment: consistent with ISO 14692 composite testing for export customers.
Through full-parameter testing of filament-wound FRP vertical storage tanks, the LEISA Technology laboratory helps manufacturers and users systematically assess structural strength, cure quality and sealing/corrosion resistance, safeguarding long-term safe storage of corrosive media.
Applicable standards: ISO 14692-2, GB/T 1447, GB/T 1449, GB/T 1450-1, GB/T 2577, GB/T 3854, GB/T 1462, ASTM D2583, ASTM D2584.