86183336073597
cncd@cryocontainer.com
enLanguage

LPG Tank

LPG Storage Tank Manufacturer for Safe, Reliable Liquefied Petroleum Gas Storage

 

ASME and CE-PED compliant stationary pressure vessels for bulk storage of Liquefied Petroleum Gas (LPG), propane, and butane. Built with SA-516 Grade 70 normalized steel plates, complete joint penetration welds, and post-weld heat treatment to withstand operating pressures up to 1.77 MPa.

 

 
 
Product Types
 

 

Aboveground LPG Storage Tanks

Stationary horizontal pressure vessels installed on concrete saddles for LPG bulk distribution terminals and industrial gas supply stations.
Water Capacity Range: 5 cubic meters to 200 cubic meters (1,300 to 52,000 US Gal)
Design Standard: ASME Section VIII Division 1 / EN 13445
Key Features: Dual relief valve manifolds, liquid level gauges (magnetic float or Rochester type), sun-shield reflective polyurethane topcoats, and anti-vortex suction internal fittings.

Underground LPG Tanks (Mounded and Direct Burial)

Space-saving pressure vessels designed for underground placement at commercial fuel stations and space-restricted industrial facilities.
Water Capacity Range: 5 cubic meters to 100 cubic meters
Corrosion Protection: Multi-layer heavy-duty epoxy coal tar or glass-flake polyurethane coating combined with sacrificial anode cathodic protection.
Engineering Detail: Extended neck nozzles for surface-level valve chamber access, liquid leak detection ports, and reinforced shell thickness against soil load pressure.

LPG Skid-Mounted Dispensing Stations

Pre-engineered, factory-tested mobile LPG refilling units integrated into a steel transport skid frame.
Capacity Range: 5 cubic meters to 30 cubic meters
Package Components: LPG storage vessel, explosion-proof LPG dispenser, hydraulic or motor-driven turbine pump, pipeline manifold, emergency shut-off system, and gas leak detection sensors.
Installation Impact: Plug-and-play setup requiring only site foundation anchoring and electrical connection.

 

Technical Specifications

Parameter

Aboveground LPG Tank

Underground LPG Tank

Skid-Mounted LPG Station

Water Capacity

5–200 m³

5–100 m³

5–30 m³

Design Pressure

1.61–1.77 MPa (233–256 psi)

1.61 MPa (233 psi)

1.61 MPa (233 psi)

Design Temperature

-20°C to +50°C (-4°F to 122°F)

-20°C to +50°C

-20°C to +50°C

Shell Material

SA-516 Grade 70 / Q345R / SA-612

SA-516 Grade 70 / Q345R

SA-516 Grade 70

Corrosion Allowance

1.0–3.0 mm

2.0–3.0 mm

1.0–2.0 mm

Storage Medium

Propane, Butane, Commercial LPG

Propane, Butane, LPG

Commercial LPG

Nozzle Connections

Liquid inlet/outlet, vapor return, safety relief, drain, level gauge, pressure gauge

Extended rise nozzles with top-entry access box

Factory-piped manifold with bypass valves

Surface Coating

Sandblasting to Sa 2.5, epoxy zinc-rich primer, white polyurethane finish

Heavy-duty polyurethane or epoxy asphalt; minimum 800 μm dry film thickness

Industrial anti-corrosive primer and polyurethane finish

Design Code

ASME Section VIII, Division 1 (U/U2 Stamp), CE-PED, GB 150

ASME Section VIII, Division 1, CE-PED

ASME Section VIII, Division 1, CE-PED

 

Industrial LPG Mounded Bullet Tank For Bulk Storage Terminals

 

Applications

LPG Cylinder Bottling Plants: Primary storage reservoir feeding automated or semi-automated cylinder filling scales.

 

Industrial Burner and Boiler Feed: Constant-pressure gas supply for textile drying, glass manufacturing, metal heat treatment, and ceramic kilns.

 

Commercial and Agriculture Gas Stations: Thermal energy storage for greenhouse heating, grain drying facilities, and centralized residential gas distribution networks.

 

Autogas Refueling Stations: Fuel supply source integrated with LPG dispensers for autogas vehicles.

 

Customization Options
 

Shell and Head Specifications

Custom diameter-to-length ratios, head types (ellipsoidal 2:1 or hemispherical), and upgraded plate thickness for low-temperature environments (-40 deg C using SA-537 Class 2).

Valve and Instrument Packages

Choice of Fisher, REGO, or REGO-compliant safety relief valves, Endress+Hauser radar level transmitters, or Rochester magnetic float gauges.

Nozzle Layout and Piping

Tailored nozzle orientation, ANSI or DIN flange pressure ratings (Class 150 / Class 300 / PN25 / PN40), and integrated internal drop tubes.

Skid Configurations

Single or double pump setups, dual-dispenser options, solar-powered control panels, and fire-proof insulation jackets.

 

Quality and Compliance
 

Automated Submerged Arc Welding (SAW): Shell longitudinal and circumferential seams welded using double-sided automatic SAW to maintain grain structure integrity.

 

100 Percent Non-Destructive Testing (NDT): All pressure-retaining butt welds undergo 100 percent Radiographic Testing or Ultrasonic Testing, supplemented by Magnetic Particle Testing on nozzle connections.

 

Post-Weld Heat Treatment: Full vessel stress relieving in a computer-controlled gas-fired furnace to eliminate residual welding stress and mitigate stress corrosion cracking.

 

Hydrostatic Pressure Test: Every vessel undergoes hydrostatic testing at 1.25 to 1.5 times design pressure, held for a minimum of 60 minutes with zero pressure drop.

 

International Certification and Inspection: ASME U / U2 Stamp authorization, CE-PED certification (Module G or Module B+D), and third-party inspection reports issued by SGS, TUV, or Bureau Veritas.

 

 

Our Certificate

 

productcate-1-1
productcate-1-1
productcate-1-1
productcate-1-1

 

 

FAQ

 

Q: What material grades are used for LPG tanks operating in low-temperature ambient conditions?

A: For standard ambient temperatures (-20 deg C to 50 deg C), normalized SA-516 Grade 70 or Q345R steel plates are standard. For cold-climate applications down to -40 deg C, we specify SA-537 Class 2 or SA-516 Grade 70 with mandatory Charpy V-notch impact testing at -40 deg C to verify material toughness.

Q: How do you prevent stress corrosion cracking in LPG storage vessels?

A: Stress corrosion cracking in LPG vessels is primarily triggered by residual welding stresses combined with trace hydrogen sulfide or moisture in the gas. We execute full-vessel post-weld heat treatment in an automated furnace at 600 deg C to 620 deg C for a controlled soak period, reducing peak residual stress below 50 MPa.

Q: What inspection documentation accompanies the shipment of an ASME U-Stamped LPG tank?

A: Each ASME-certified tank ships with an official Manufacturer's Data Report (Form U-1 or U-1A) signed by an Authorized Inspector. The quality assurance packet includes Mill Test Certificates with heat numbers, 100 percent radiographic inspection reports, post-weld heat treatment chart records, hydrostatic test certificates, and paint thickness inspection reports.

Q: What surface preparation and coating process is applied to underground LPG tanks?

A: Underground vessels undergo abrasive blast cleaning to ISO 8501-1 Sa 2.5 finish with a 50 to 75 micron anchor profile. We apply solvent-free polyurethane or glass-flake epoxy resin to a minimum dry film thickness of 800 microns. Every square meter undergoes a 5 kV to 10 kV high-voltage holiday test to ensure zero pinholes before dispatch.

Q: Can you supply complete LPG skid stations with CE or ATEX explosion-proof certification?

A: Yes. LPG skid stations can be built in compliance with European CE-PED requirements for the pressure vessel and ATEX Directive 2014/34/EU for all electrical components, pumps, sensors, and junction boxes installed in Zone 1 or Zone 2 hazardous areas.

Q: What technical parameters are required to generate an accurate quote and GA drawing?

A: To prepare a formal technical quote and preliminary General Arrangement drawing within 24 hours, submit the following details: required water capacity (cubic meters or gallons), design standard (ASME or CE-PED), operating medium composition (propane and butane ratio), ambient temperature range, installation type (aboveground or underground), and target port of delivery.

As one of the most professional lpg tank manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy advanced lpg tank in stock here from our factory. We also accept customized orders.

Above Ground Lpg Tank, LPG Skid Station, Underground Lpg Tank