How is the rotation speed controlled?

The machine adopts a frequency conversion motor drive, and the spindle speed is infinitely variable, allowing flexible adjustment according to welding requirements.

Is this machine suitable for mass production?

Yes. The machine is designed for standardized LPG cylinder production and is suitable for manufacturers who require stable operation, repeatable welding quality, and neat weld seam appearance in continuous production.

Automatic Saw Circumferential Welding Machine for LPG Cylinder Manufacturing Production Line

Name: Automatic Saw Circumferential Welding Machine for LPG Cylinder Manufacturing Production Line
Brand: Wuxi Longterm Machinery Technologies Co., Ltd.
SKU: 1986917301

Jiangsu, ChinaWuxi Longterm Machinery Technologies Co., Ltd.

US$14,700.00

1 Set

Product profile

Customization

Available

Cooling Way

Air Cooling

Control

Semi-Automatic

Model NO.

LTM-HW330-SA

Style

Portable

Frequency Range

High Frequency

Electric Current

Inverter

Product Name

LPG Cylinder Circumferential Submerged Arc Welding

Model

Ltm-Cw330-SA

Application

Girth Seam Welding of LPG Cylinders

Welding Process

Saw (Submerged Arc Welding)

Torch Type

Single Torch

Applicable Product

LPG Cylinder

Cylinder Diameter Range

250-330 mm

Cylinder Length Range

≤700 mm

Weld Seam Thickness Range

2-4 mm

Power Supply

380V ±10%

Control Type

Push-Button Control

Drive Type

Frequency Conversion Motor Drive

Spindle Speed

Infinitely Variable

Machine Structure

Horizontal Type

Transport Package

Shipping Packaging

Trademark

HLT

Origin

China

Key features

SAW Process for LPG Cylinders: Specialized for automatic circumferential seam welding of LPG cylinders with stable quality.

Infinitely Variable Speed: Frequency conversion motor drive allows flexible spindle speed adjustment for welding requirements.

3D Torch Micro-Adjustment: Vertical, horizontal, and longitudinal fine adjustment ranges are not less than 80 mm.

Pneumatic Clamping System: Uses pneumatic clamping and adjustable tailstock for secure workpiece fixing and length adaptation.

Automatic Welding Cycle: Features automatic torch positioning, start, stop, return, and tailstock retraction for efficiency.

Turnkey Project Delivery: Provides process planning, equipment supply, layout support, installation, and commissioning services.

Global Experience & Support: Over 30 years of experience with reliable after-sales service and technical support worldwide.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExhibition Experience

Wuxi Longterm Machinery Technologies Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/FactoryExport Year: 2003-07-05Nearest Port: Shanghai, NingboAverage Response Time: ≤2.69hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW

AI-Powered supplier vetting

SummaryWUXI LONGTERM MACHINERY TECHNOLOGIES CO., LTD. is presented as a machinery supplier with production lines for LPG gas cylinders, steel drums, CNG cylinders, and LNG tanks. It supports extensive customization, reports new products within the past year, and has ten years of export experience with self-managed import/export rights. The supplier has participated in an offline industry exhibition and accepts several international trade and payment terms. However, it reports no ODM service, no OEM service for popular brands, no inventory, overseas warehouse, overseas showroom, overseas branch or agent, and no ERP, OA, CRM, or SAP-based process management. Financial records are indicated for 2021–2023, but no actual financial results are provided. One buyer association and an import origin are listed, while broader customer references and certification information are not evidenced.

Supplier typeThe supplier is identified as WUXI LONGTERM MACHINERY TECHNOLOGIES CO., LTD. and is described as a machinery producer with LPG cylinder, steel drum, CNG cylinder, and LNG tank production-line equipment. The available information supports classification as an industrial machinery manufacturer, although its full legal business scope is only partially shown.

R&D capabilityThe supplier reports new products within the past year and offers multiple forms of customization, while its described machinery portfolio covers several gas-cylinder and tank production lines. It does not provide an available SDK and does not offer ODM service; nevertheless, the reported recent product development supports a positive innovation indication.

Production capacityThe company description lists equipment and production lines for LPG gas cylinders, steel drums, CNG cylinders, and LNG tanks, indicating broad manufacturing-equipment capability. It also reports 25 qualified service-capability suppliers and written supplier-assessment procedures with records, although production capacity, output, and factory scale are not stated.

Customization capabilityBoth relevant slices list customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is explicit evidence of a broad customization offering, although ODM service is specifically unavailable.

Client casesThe supplier is reported to have participated in the EUROPEAN LIQUID GAS CONGRESS, and one associated buyer, MADRAS HYDRAULIC HOSE PRIVATE LIMITED, is listed. These provide limited external-market and customer evidence, but the information does not establish the scale, product scope, or outcome of the customer relationship.

Product Q&A

Q:What is this machine used for?

This machine is designed for automatic circumferential seam welding of LPG cylinders, mainly for girth seam welding of assembled steel cylinder bodies in production lines.

Q:What welding process does this machine use?

The machine adopts the SAW (Submerged Arc Welding) process and uses a single-torch welding design for stable circular seam welding performance.

Q:Is the machine fully automatic?

The machine performs an automatic welding cycle, including clamping, torch positioning, welding start, welding stop, torch return, and tailstock retraction. However, the loading and unloading of workpieces are manual.

Q:How is the welding torch adjusted?

The welding torch is equipped with a 3D micro-adjustment mechanism. The vertical, horizontal, and longitudinal fine adjustment ranges are all not less than 80 mm.

Q:What kind of clamping system does the machine use?

The machine uses a pneumatic clamping system to fix the workpiece during welding. It also includes a pneumatic adjustable tailstock for different cylinder lengths.