PRESSURE VESSELS
Sealed pressure equipment for reaction, heat transfer, separation, and storage — engineered for petrochemical, LNG/LPG, chemical, and energy applications. Design pressures from 0.1 to 35 MPa, operating temperatures from −196°C to 800°C. Manufactured at our 103 mu campus in Zhangjiagang with 15,000 T/year fabrication capacity.
PRODUCT OVERVIEW
Pressure vessels are sealed equipment designed to contain internal or external pressure. Used across petrochemical refining, energy production, chemical processing, and cryogenic storage, they perform four core functions: reaction, heat transfer, separation, and storage.
REACTOR VESSELS
Tubular, stirred tank, fixed bed, and fluidized bed reactor configurations. Process efficiency up to 99.9%. Designed for catalytic cracking, hydrogenation, polymerization, and oxidation services.
HEAT EXCHANGERS
Shell-and-tube, plate, spiral, and air-cooled configurations per TEMA / GB/T 151. Heat transfer efficiency up to 95%. Optimized U-values through enhanced tube surfaces and baffle design.
STORAGE TANKS
Spherical, horizontal, vertical, and LNG/LPG cryogenic storage vessels. Capacities up to 10,000 m³. Materials include 9% Ni steel for cryogenic service down to −196°C.
SEPARATORS & COLUMNS
Gas-liquid separators, knockout drums, distillation columns, and adsorption towers. Internals engineered for process efficiency with low pressure drop and high separation performance.
MANUFACTURING CAPABILITY
- 103 mu campus — Zhangjiagang, Jiangsu
- 38,000 m² workshop area
- 50T × 2 + 32T × 2 overhead cranes
- 15,000 T/year fabrication capacity
- 600+ PQR welding qualifications
- ASME U Stamp holder
- PED 2014/68/EU certified (CE)
KEY APPLICATIONS
Pressure vessels engineered for continuous-duty service across energy and process industries.
PETROCHEMICAL
Refining columns, reactor vessels, separators, and high-pressure drums for crude processing, catalytic cracking, and hydrodesulfurization units.
LNG / LPG
Cryogenic storage vessels, vaporizers, and BOG handling equipment. 9% Ni steel construction for temperatures down to −196°C. Marine and onshore terminal applications.
CHEMICAL PROCESSING
Reactor vessels, heat exchangers, and storage drums for chemical synthesis, polymer production, and specialty chemical manufacturing.
ENERGY & POWER
Pressure equipment for power generation, waste heat recovery, geothermal plants, and hydrogen storage applications.
KEY SPECIFICATIONS
Typical design envelope across vessel types.
| Parameter | Value |
|---|---|
| Design pressure | 0.1 – 35 MPa |
| Temperature range | −196°C to 800°C |
| Max storage capacity | 10,000 m³ |
| Fabrication capacity | 15,000 T/year |
| Crane capacity | 50T × 2 + 32T × 2 |
| Workshop area | 38,000 m² |
| PQR qualifications | 600+ |
SAFETY STANDARDS & CERTIFICATIONS
Lmart holds direct certifications — not sub-contracted. Every stamp is our own.
- ASME BPVC Section VIII Div.1 — U-Stamp
- PED 2014/68/EU — CE Marking (Module H)
- GB/T 150 — Chinese national pressure vessel standard
- EN 13445 — European unfired pressure vessels
- ISO 9001:2015 — Quality management system
- ISO 14001 — Environmental management system
The U-Stamp authorises Division 1 construction only — Division 2, power boilers and repair work are separate certificates. what the ASME U-Stamp actually covers.
MARINE CLASSIFICATION — 6 SOCIETIES
Approved by six international classification societies for marine and offshore pressure equipment:
- DNV — Det Norske Veritas
- ABS — American Bureau of Shipping
- BV — Bureau Veritas
- LR — Lloyd’s Register
- NK — Nippon Kaiji Kyokai (ClassNK)
- CCS — China Classification Society
MATERIALS
Full material traceability with EN 10204 Type 3.1/3.2 mill certificates from approved suppliers.
| Material | Grade | Service |
|---|---|---|
| Carbon Steel | Q345R / SA516-70 | General pressure containment |
| Stainless Steel | 304L / 316L / 321 | Corrosion-resistant service |
| Low-Temperature Steel | 9Ni / SA553 | Cryogenic (LNG/LPG) to −196°C |
| Titanium Alloy | Ti-6Al-4V / TA2 | Seawater & aggressive media |
| Duplex Steel | S32205 / S32750 | High-chloride environments |
| Nickel Alloy | Inconel 625 / Hastelloy C-276 | Extreme corrosion resistance |
PRESSURE RANGE COMPARISON
Design pressure capabilities across vessel categories (MPa).
FREQUENTLY ASKED QUESTIONS
Common questions from EPC engineers and procurement teams about pressure vessel design and fabrication
What design codes does Lmart use for pressure vessel fabrication?
We manufacture to ASME BPVC Section VIII Division 1 (U-Stamp), PED 2014/68/EU with CE marking, EN 13445, and Chinese standard GB/T 150. Code selection depends on the installation country’s regulatory requirements and the client’s project specification. For marine applications, we obtain type approval from the required classification society (DNV, ABS, BV, LR, NK, or CCS).
What types of pressure vessels does Lmart manufacture?
Our product range covers reactor vessels (tubular, stirred tank, fixed bed, fluidized bed), shell-and-tube heat exchangers (TEMA-compliant, fixed tubesheet, floating head, U-tube, kettle reboiler), storage vessels (spherical, horizontal, vertical, cryogenic LNG/LPG tanks up to 10,000 m³), separators, knockout drums, columns, and adsorption towers. Each vessel is custom-engineered to the project datasheet.
What is your maximum design pressure and temperature capability?
Design pressure up to 35 MPa (5,076 psi) and operating temperatures from −196°C (cryogenic LNG/nitrogen service) to 800°C (high-temperature reactor service). For extreme conditions, we apply ASME Section VIII Div.2 design-by-analysis methodology with finite element analysis (FEA) to optimize wall thickness and nozzle reinforcement.
What materials can you fabricate with?
Carbon steels (Q345R, SA516-70, SA387), stainless steels (304L, 316L, 321, 347), low-temperature steels (9% Ni / SA553 for cryogenic service), duplex and super duplex (S32205, S32750), titanium (TA2, Ti-6Al-4V), nickel alloys (Inconel 625, Hastelloy C-276), and clad/lined construction. We hold 600+ PQR welding procedure qualifications and source all materials from approved mills with full traceability (EN 10204 3.1/3.2).
What classification society approvals does Lmart hold?
Lmart is approved by six international classification societies: DNV (Det Norske Veritas), ABS (American Bureau of Shipping), BV (Bureau Veritas), LR (Lloyd’s Register), NK (ClassNK), and CCS (China Classification Society). We also support regional certifications including DOSH (Malaysia), CRN (Canada), and MOM (Singapore). Our marine pressure equipment has been installed on LNG carriers, container vessels, and offshore platforms.
What is the typical lead time for a custom pressure vessel?
Small to medium vessels (≤10 tonnes): 6–10 weeks. Large vessels or special alloy construction: 10–18 weeks. Projects with classification society inspection and full EPC documentation: add 2–4 weeks. Our 38,000 m² workshop with 50T overhead cranes and 15,000 T/year capacity allows parallel fabrication of multiple vessels. A production schedule with hold/witness points is issued at order confirmation.
REQUEST A QUOTATION
Share your process datasheet or specifications — our engineers will provide a technical proposal within 48 hours.