Heavy Industrial Cryo Solutions Vertical Welded Tanks

The welded insulated gas cylinder is a gas storage device manufactured using high-vacuum multi-layer insulation technology and precision welding processes. It is primarily designed for the safe storage and transportation of “cryogenic liquefied gases” (such as liquid oxygen, liquid nitrogen, liquid argon, LNG, etc.).

Product standards:	ISO11439、ECER110
Product model:	DPW650-500-3.45
External dimensions （mm）:	840×1030×2050
Empty weight of gas cylinder （Kg）：	469
Working pressure （MPa）:	3.45
Base structure:	Frame style support structure

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Detailed Description
Specification
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[excel | 2025.05.06] Precision-Engineered Welded Cryogenic Cylinders
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Specifications

Our state-of-the-art welded insulated gas cylinders combine high-vacuum multilayer insulation with precision welding technology to ensure safe, efficient storage and transport of cryogenic liquids (O₂, N₂, Ar, LNG, etc.).

Product standards Base structure Working pressure （MPa） Normal use pressure （MPa） External dimensions （mm） Safety valve jumping uppressure （Mpa）
Surface treatment method
ISO11439 ECER110 Frame style support structure 3.45 0.34~4.14 840×1030×2050
4.14
Polishing

Range of Application:

With its innovative design, our welded vacuum-insulated cylinder delivers exceptionally low heat transfer rates, dramatically minimizing evaporation losses – the perfect solution for industrial, healthcare, energy and research sectors.

Workshop Display

Certification

Type Approval Certificate

Annex I to Certificate

Factory Approval Certificate
Product model

DPL700-410-1.38

DPL700-450-1.38

DPL700-500-1.38

External dimensions mm

(Length × Width × Height)

1090×830×1720

1090×830×1825

1090×830×1950

Empty weight of gas cylinder Kg

356

371

389

Working pressure MPa

1.38

Normal use pressure MPa

0.52~1.38

factory setting pressure MPa

0.52~1.03

First level safety valve popping pressure MPa

1.59

Blasting pressure of bursting disc/popping pressure of secondary safety valve MPa

2.41

Nominal volume L

410

450

500

Effective volume L

389

427

475

Maximum liquid filling capacity

Kg

LO2

381

418

464

LN2

268

295

326

LAr

464

509

564

LCO₂

136

149

165

Static evaporation rate liquid nitrogen %/d

≤1.83

≤1.80

≤1.70

Type of liquid level gauge

Float rod type

Surface treatment method

Polishing

Base structure

Rubber ring

Tags:

High Pressure Welded Cryogenic Cylinders 450 232

Frequently asked questions

Q:Is it possible to customize?

A:Of course, we will provide customized services according to your requirements.
Q:Is the product's safety performance guaranteed?

A:We have ISO and ECE R certifications and manufacture our products in compliance with these standards.
Q:Is after-sales service guaranteed?

A:Yes, we provide reliable after-sales service.

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Heavy Industrial Cryo Solutions Vertical Welded Tanks

You can contact us any way that is convenientfor you. We are available 24/7 via email ortelephone.

Specifications

Range of Application:

Workshop Display

Certification

Related Products

Frequently asked questions

Product standards	Base structure	Working pressure （MPa）	Normal use pressure （MPa）	External dimensions （mm）	Safety valve jumping uppressure （Mpa）	Surface treatment method
ISO11439 ECER110	Frame style support structure	3.45	0.34~4.14	840×1030×2050	4.14	Polishing

Product model		DPL700-410-1.38	DPL700-450-1.38	DPL700-500-1.38
External dimensions mm (Length × Width × Height)		1090×830×1720	1090×830×1825	1090×830×1950
Empty weight of gas cylinder Kg		356	371	389
Working pressure MPa		1.38
Normal use pressure MPa		0.52~1.38
factory setting pressure MPa		0.52~1.03
First level safety valve popping pressure MPa		1.59
Blasting pressure of bursting disc/popping pressure of secondary safety valve MPa		2.41
Nominal volume L		410	450	500
Effective volume L		389	427	475
Maximum liquid filling capacity Kg	LO2	381	418	464
	LN2	268	295	326
	LAr	464	509	564
	LCO₂	136	149	165
Static evaporation rate liquid nitrogen %/d		≤1.83	≤1.80	≤1.70
Type of liquid level gauge		Float rod type
Surface treatment method		Polishing
Base structure		Rubber ring