PP Chemical Storage & Water Tanks

PP Chemical Storage Tanks & Water Tanks for Corrosive Liquid Containment

PP (polypropylene) chemical storage tanks provide zero-corrosion containment for acids, alkalis, and wastewater in industrial environments. Fully welded construction from virgin PP sheet ensures leak-tight joints with 15-20 year service life. Standard capacities from 100 to 10,000 liters with custom fabrication for larger volumes. According to EPA chemical storage guidelines, secondary containment is required for tanks exceeding 1,000 gallons of hazardous liquids — XICHENG EP tanks are designed with integrated bund walls where specified.

Specification	Standard Range
Capacity	100L — 10,000L (custom larger)
Material	PP (UL94 V-0), PP+UV stabilized
Wall Thickness	8-20mm depending on liquid height and SG
Configuration	Cylindrical vertical, rectangular, open-top, closed with manway
Fittings	Flanged inlet/outlet, overflow, drain, level ports
Applications	Acid storage, scrubber sump, wastewater equalization, chemical dosing

PP tank design — what determines wall thickness and geometry?

Tank wall thickness is calculated from liquid height, specific gravity, and design safety factor (typically 2.0 for static storage, 2.5 for agitated/mixed contents). A 5,000L tank storing HCl at SG 1.18 with 2.0m liquid height requires approximately 15mm PP wall. Cylindrical tanks distribute hydrostatic pressure evenly; rectangular tanks require thicker walls or external bracing for the same capacity. See our PP tank design guide for complete sizing methodology.

Frequently Asked Questions

What chemicals can PP tanks store?

PP tanks safely store HCl (up to 37%), H2SO4 (up to 80% at ambient), HF (up to 40%), NaOH (up to 50%), NaClO, and most inorganic acids and alkalis. Not suitable for strong oxidizing agents (concentrated HNO3, chromic acid) or aromatic hydrocarbons (toluene, xylene). For chemical compatibility verification, contact our engineering team.

Can PP tanks be used outdoors?

Yes, with UV-stabilized PP. Standard PP without UV stabilizers is for indoor use only. Outdoor tanks should specify UV-stabilized grade or be installed under cover.

What is the delivery lead time for custom tanks?

Standard sizes ship in 10-15 working days. Custom-fabricated tanks above 5,000L or with complex fitting arrangements ship in 15-25 working days.