When is piston better than screw?
High pressure at modest flow, intermittent duty, or process gases screws cannot swallow. Put the duty, not the preference, on the RFQ.
Technology
Piston packages in China run from workshop portables to API-style process recips. Those are not one RFQ. Write pressure stages and whether the air must be oil-free.
Specification
A 12 bar two-stage piston for a workshop is a different factory from a hydrogen diaphragm or a process recip. Put the number of stages, lubrication, and the gas on the sheet.
Listed plants with piston series are matched from published rows. Portable piston and industrial piston should not share a shortlist unless you meant that.
RFQ points
Send your operating pressure, required flow and site conditions to compare suitable configurations.
Matching plants
The plant remains the seller. Quotes are comparable because the RFQ is the same sheet.
| Plant | Cluster | Specialty | Documents | Export |
|---|---|---|---|---|
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Shenyang | API 618 reciprocating · Labyrinth · High-speed balanced piston |
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Export ready |
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Changzhou | Mobile miniature piston compressors · Compressor heads and cast/machined parts |
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Bengbu | CNG station reciprocating boosters · DWF natural-gas transfer and nitrogen/instrument-air duties with engineered gas-path selection |
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Export ready |
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Suzhou | Reciprocating process compressors (6M50 / 8M125) · Separate centrifugal portfolio · Parts and vessels |
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Export ready |
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Wuxi | Centrifugal air · Process-gas centrifugal · Reciprocating air (API 618) |
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Export ready |
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Wenling | Small industrial piston compressors |
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Pearl River Delta | Two-stage screw · PM VSD screw · Oil-free |
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Export ready |
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Wenling | Oil-free piston · Medical/lab · Silent |
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Export ready |
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Wenling | Oil-free piston · Small industrial/portable air pumps and compressors |
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Export ready |
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Hangzhou | Oil-free scroll · Oil-free piston · Oil-free booster |
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Export ready |
| Shunfeng Nanjing Jiangning | Nanjing | Process D/M-type reciprocating · Marine piston |
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Export ready |
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Quzhou | PM VSD screw · Diesel portable screw · Industrial piston |
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Export ready |
Published series
Where a factory published a series, it is listed. Empty kW / FAD cells are confirm-on-RFQ.
| Catalog ref. | Type | Power | Pressure | Flow | Air quality | Plant | |
|---|---|---|---|---|---|---|---|
OUTES-PISTONOutstanding OTS oil-free receiver-mounted piston packages
|
Piston | 6,000 W · OTS-1600×4-160L published row | 7.0 bar · pressure basis to agree | 400 L/min published air volume · test basis to agree | — | Taizhou Outstanding Industry and Trade | RFQ |
GUNAI-6M50Gunai 6M50 reciprocating process-compressor reference
|
Piston | Selected driver duty required | Selected gas inlet / outlet duty | Capacity and volume basis required | — | Gunai Heavy Industry | RFQ |
NJSF-DShunfeng D-type process-gas reciprocating compressor
|
Piston | — | — | — | — | Shunfeng | RFQ |
SHENJIANG-PISTONShenjiang W-1/7 piston machines — identify the complete receiver package
|
Piston | Offered motor rating required | Actual model pressure sheet required | Delivered flow/test basis required | — | Shenjiang | RFQ |
OUTES-VTWINOutstanding 40 L oil-lubricated V-twin compressor
|
Piston | 1,800 W · selected 40 L V-twin row | 8.0 bar · source pressure entry | 120 L/min published air volume · test basis to agree | — | Taizhou Outstanding Industry and Trade | RFQ |
GUNAI-8M125Gunai 8M125 reciprocating piston process compressors
|
Piston | Selected driver / site conditions | Duty-specific gas selection | Agreed capacity reference required | — | Gunai Heavy Industry | RFQ |
AI-OILFREE-PISTONANEST IWATA TFPJ tank-mounted oil-free reciprocating compressors
|
Piston | — | — | — | — | ANEST IWATA | RFQ |
HANDE-PISTONHDW piston compressors and HD-SPCF serial packages
|
Piston | 5.5 kW · HDW6708 example | 0.8 MPa (8 bar) · HDW6708 | 0.67 m³/min · HDW6708 | — | Hande | RFQ |
TLINGTE-RECIPTurbo-Tech customized reciprocating compressor packages
|
Piston | Duty-selected; catalog ceiling 7350 kW | Duty-selected; catalog discharge <70 MPa | Gas and frame selection required | — | Turbo-Tech | RFQ |
NJSF-MARINEShunfeng WP air-cooled marine-air compressor references
|
Piston | — | — | — | — | Shunfeng | RFQ |
LIANHE-ASULianhe instrument-air and nitrogen boosting — define the gas boundary
|
Piston | VWF nitrogen example:55 kW | DW example0.5→1.3 MPa;VWF0.5→1.6 | DW1.0 m³/min;VWF895 Nm³/h;distinct | — | Lianhe | RFQ |
| YUANDA-LABYRINTHK/D labyrinth compressors | Piston | — | — | — | — | Yuanda | RFQ |
FAQ
High pressure at modest flow, intermittent duty, or process gases screws cannot swallow. Put the duty, not the preference, on the RFQ.
Piston compressor manufacturers in China: Voltage and frequency matter as much as bar. Typical first reply: 1–2 working days after the plant confirms it can hold the duty.
Issue RFQ