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72m³ LPG Semi-Trailer Product Overview

This 72 cubic meter LPG semi-trailer is designed for the safe and efficient transport of liquefied petroleum gas (commercial propane). This FL type dangerous goods vehicle complies with Class 2.1 hazardous material regulations, with a unit volume filling ratio of 420 kg/m³.

The tank is constructed from Q420R high-strength steel with 11.5mm shell thickness and 8.0mm head thickness, providing excellent pressure resistance and durability. The vehicle is equipped with a 3-axle BPW air suspension system, BPW 10T axles, 12 aluminum alloy rims with 12R22.5 radial tires, and a JOST 50# king pin and landing gear. Standard safety features include EBS (Kormee CM-TEBS), disc brakes, an emergency shutoff system, and a conductive electrostatic grounding belt.

This semi-trailer is designed for a 10-year service life and meets all requirements for domestic road transport of hazardous materials.

72m³ LPG Semi-Trailer Vehicle Technical Parameters

Parameter	Value
Product name	LPG transport semi-trailer
Brand	Qixing
Announcement batch	377
Gross mass	40,000 kg
Curb weight	14,498 kg
Rated load mass	25,502 kg
Tank volume	72 m³
Overall dimensions (L×W×H)	13,500 × 2,550 × 4,000 mm
Axle configuration	3 axles
Axle load distribution (full load)	Front: 16,000 kg / Rear: 24,000 kg
Wheelbase	7,010 + 1,310 + 1,310 mm
Rear track	1,860 / 1,860 / 1,860 mm
Tire size	12R22.5 12PR or 11.00R20 12PR
Suspension type	Air suspension (BPW)
Approach / departure angle	– / 15°
Front / rear overhang	– / 1,940 mm
Maximum roll stabilization angle (full load)	≥ 23°
Design service life	10 years
Type of transport	Domestic road transport (dangerous goods)

72m³ LPG Semi-Trailer Tank Parameters

Parameter	Value
Medium	LPG (commercial propane)
Hazard classification	Class 2.1 (flammable gas)
Unit volume filling ratio	420 kg/m³
Tank total capacity	72 m³
Tank effective volume	60.71 m³
Tank dimensions (total length × outer diameter)	13,161 mm × φ2,533 mm
Shell material	Q420R (WH590E), thickness 11.5mm
Head material	Q420R (WH590E), thickness 8.0mm
Working temperature	-40°C to +50°C
Design temperature	-40°C / +50°C
Working pressure	≤ 1.60 MPa
Design pressure	1.76 MPa / -0.1 MPa (full vacuum)
Hydraulic test pressure	2.29 MPa
Pneumatic tightness test pressure	1.76 MPa
Weld joint coefficient	1.0

72m³ LPG Semi-Trailer Safety Devices

Component	Model / Specification
Safety valve (with rupture disc)	NA42F-25 DN100
Safety valve set pressure	1.85 MPa
Safety valve rated discharge pressure	≤ 2.11 MPa
Safety valve return seat pressure	≥ 1.67 MPa
Emergency shutoff valve (liquid phase)	QGJ43F-25P DN50
Emergency shutoff valve (vapor phase)	QGJ43F-25P DN25
Emergency shutoff type	Built-in full-port, mechanical operation
Closing time	≤ 5 seconds
Thermal closure temperature	75 ± 5°C

72m³ LPG Semi-Trailer Instrumentation

Component	Model	Specification
Level gauge (floating ball type)	UQZ-6	Range 200–2310mm, accuracy 2.5
Pressure gauge	YN-100	Nominal pressure 2.5 MPa
Thermometer	WTQ-280	–

72m³ LPG Semi-Trailer – FL Type Dangerous Goods Tanker with Air Suspension

LPG Semi Trailer 2
LPG Semi Trailer 3

Key Construction Features

Tank and Pressure Vessel

Q420R high-strength steel shell and heads
11.5mm shell thickness, 8.0mm head thickness
Full penetration welding with 1.0 joint coefficient
Designed for 1.76 MPa internal pressure and full vacuum

Suspension and Axles

BPW 10T axles (3 units)
BPW air suspension (non-lifting type)
Aluminum alloy rims (12 pieces)
12R22.5 12PR radial tires

Braking and Safety

EBS: Kormee CM-TEBS (optional: Knorr K11061XVXX)
Disc brakes on all axles
Emergency shutoff system with thermal closure
Safety valve with rated discharge capacity

Attachments and Accessories

JOST 50# king pin (welded/bolted)
JOST single-action landing gear (28T)
High-strength steel side guards
Aluminum alloy toolbox
Aluminum alloy tire guards

Applications

Long-distance LPG transport from refineries to distribution centers
Bulk propane delivery for industrial and residential use
Dangerous goods fleet operations
Inter-provincial hazardous material logistics

Frequently Asked Questions (FAQ)

Q1: What is the tank capacity of this LPG semi-trailer?
A: The total tank capacity is 72 m³ with an effective volume of 60.71 m³. The filling ratio is 420 kg/m³ for commercial propane.

Q2: What type of suspension does it use?
A: The trailer is equipped with BPW air suspension (non-lifting type) on all three axles.

Q3: What safety features are included?
A: It includes EBS with disc brakes, emergency shutoff valves, a thermal closure device (75±5°C), a safety valve with rated discharge capacity, and a conductive electrostatic grounding belt.

Q4: What materials are used for the tank shell and heads?
A: Both the shell and heads are made of Q420R (WH590E) high-strength steel, with 11.5mm shell thickness and 8.0mm head thickness.

Q5: What is the design pressure and working temperature range?
A: The design pressure is 1.76 MPa (with full vacuum rating -0.1 MPa), working temperature ranges from -40°C to +50°C.

Q6: Can the axle and tire configuration be customized?
A: The standard configuration includes BPW 10T axles and 12R22.5 12PR tires. Other brands (such as Fuwa) and tire sizes are available upon request.

Q7: What is the maximum roll stabilization angle at full load?
A: The maximum roll stabilization angle is ≥23° at full load.

Q8: Is the trailer suitable for international shipping?
A: While designed for domestic road transport, the trailer can be configured for export with appropriate packaging and shipping arrangements.

72m3 LPG transport trailer

72m³ LPG Semi-Trailer – FL Type Dangerous Goods Tanker with Air Suspension