Shanghai Orient: process reciprocating equipment from Baoshan
Shanghai Orient Compressor Manufacturing was established in 2004 and publishes its address in Gucun industrial park, Baoshan, Shanghai. It specializes in development and manufacture of large reciprocating process compressors for petroleum, chemical and natural-gas applications.
Its described markets also include coal and silicon chemicals, hydrogen energy, power, fertilizer, alkali, metallurgy and pipeline transportation. These are engineered gas duties, not interchangeable workshop-air machines.
A historical Shanghai Science and Technology Commission list matches the legal name and Fulian Second Road address. It corroborates the company identity; it does not establish current equipment certification.
Company-reported development milestones
- 2004
- Company established
- 2005 / 2010
- First PetroChina / Sinopec orders respectively
- 2014
- Overseas refinery order recorded
- 2017
- 150-tonne-force hydrocracking-compressor order recorded
- 2021 / 2022
- First CNOOC order / hydrogen-energy EPC installation order
These are manufacturer-reported historical milestones. Confirm the current proposed model, project scope and delivery. The profile's approximately 600 operating machines is not treated as a current fleet census.
DF · Technical platform
Understand the frame before discussing a gas-cylinder selection
The DF product page describes eight piston-force classes and opposed-balanced designs, including odd-numbered rows. The platform uses one crank per row and short-stroke alloy-steel crankshaft construction, with modular parts and computer-based design.
The component description explains bearing alignment, connecting rods, crosshead adjustment and controlled tightening. These are useful engineering details; its broad claims of low noise, power or wear do not replace model-specific tests.
The DF component account names aluminum-magnesium alloy bearings. DF-HA has a different bearing description below. Establish the selected frame's actual materials in the offer.
DF platform components and project inputs →
Frame and alignment
The manufacturer describes a cast-iron frame with multiple supports and CNC machining of main-bearing locations. Request the selected frame's alignment and foundation requirements.
Crankshaft and connecting rods
Forged alloy-steel parts, one crank per row and short stroke are described for DF. Confirm actual rows, stroke, speed and driver connection.
Crosshead and assembly
Adjustable crosshead shoes and torque/hydraulic tightening methods are described. Obtain maintenance clearances, alignment procedures and service tools.
DF-HA · D-type balanced package
Separate the gas-cylinder design from the frame oil system
D-type symmetrical balanced arrangement
The manufacturer says DF-HA can be supplied as a complete skid. Define the compressor, driver, coolers, separators, piping, instruments and controls actually included in the order.
Gas-cylinder choices
Lubricated or non-lubricated cylinders are offered. Cylinder, piston and rod materials vary with service. Agree gas-contact materials, packing/leakage and permissible contamination.
| Source field | Published value | Selection boundary |
|---|---|---|
| Combined piston force | 8,000 lbf / 35,593 N | Separate from gas force; actual duty calculation required |
| Gas force | 9,600 lbf / 42,712 N | Not machine mass or pressure |
| Crank count | 1 / 2 / 4 | Choose the offered arrangement |
| Stroke / speed alternatives | 140 / 120 mm 740 / 980 rpm | The row does not pair these into one guaranteed configuration |
Installation dimensions and shipping mass need checked drawings
The source table gives 3,000 kg for a two-cylinder gross-mass field and 850 kg per added crank/cylinder. These are not the complete photographed package's shipping weight.
Its two-cylinder length cell pairs 40.8 inches with 1,025.5 mm inconsistently. Obtain current checked arrangement, foundation, lifting and transport drawings rather than using this cell for construction.
DF-HA frame lubrication remains essential
DF-HA's component account specifies Babbitt main and big-end bearings, with bronze small-end bearings. The frame oil circuit is separate from whether the gas cylinder is lubricated.
- Main oil circulation: crankshaft-driven gear pump draws from the frame sump.
- Conditioning: external cooler and filter feed the main-bearing manifold.
- Bearing paths: oil passages serve the crankshaft, connecting rod and crosshead before oil returns to the sump.
- Prelubrication and backup: a motor-driven auxiliary pump pressurizes the system before starting and provides backup if the main pump fails.
Agree the actual auxiliary-pump control, pressure/temperature monitoring, trip requirements and maintenance access. A non-lubricated cylinder does not remove frame lubrication.
The page lists ring, mesh, slotted and poppet valve forms, with materials and full/partial-load calculations selected to suit the duty. Request the valve and packing selections with the proposed gas and operating modes.
DF-HA structure, source fields and package requirements →DF FAMILY · FRAME SIZES
From the DF-HA skid to the DF-R frame: the published force ladder
Orient's product menu lists thirteen DF families: DF, DF-HA, DF-A, DF-C, DF-K, DF-B, DF-F, DF-E, DF-I, DF-G, DF-J, DF-L and DF-R. Ten of them have their own parameter table. The table below copies the force, throw, stroke and speed fields; DF-HA, at 9,600 lbf gas force, sits at the small end.
| Family | Gas force | Combined piston force | Throws | Stroke options, mm | Speed options, rpm |
|---|---|---|---|---|---|
| DF-C | 15,000 lbf / 66,738 N | 12,500 lbf / 55,615 N | 2, 4 | 210, 240 | 500, 428 |
| DF-K | 21,600 lbf / 96,103 N | 18,000 lbf / 80,086 N | 2, 4 | 210, 240 | 600, 500 |
| DF-B | 36,000 lbf / 160,171 N | 30,000 lbf / 133,476 N | 2, 4 | 254, 279.1, 304.8 | 600, 500, 428 |
| DF-F | 54,000 lbf / 240,256 N | 45,000 lbf / 200,214 N | 2, 4 | 279.1, 304.8 | 500, 428 |
| DF-E | 72,000 lbf / 320,342 N | 60,000 lbf / 266,952 N | 2–6 | 279.1, 304.8 | 500, 428 |
| DF-I | 96,000 lbf / 427,122 N | 80,000 lbf / 355,932 N | 2, 4, 6 | 355.6, 381 | 375, 333 |
| DF-G | 125,000 lbf / 556,150 N | 105,000 lbf / 467,166 N | 2–10 | 355.6, 381 | 375, 333 |
| DF-J | 179,240 lbf / 799,299 N | 150,000 lbf / 667,233 N | 2, 4, 6 | 355.6, 381, 406.4 | 375, 333, 300 |
| DF-L | 220,000 lbf / 978,824 N | 180,000 lbf / 800,856 N | 2–10 | 355.6, 381, 406.4 | 375, 333, 300 |
| DF-R | 325,000 lbf / 1,475,000 N | 270,000 lbf / 1,225,000 N | 2, 4, 6 | 305, 381, 406.4 | 375, 333, 300 |
Read three source issues before using the table. The DF-A page shows the DF-C table rather than one of its own. DF-I and DF-G, and DF-J and DF-L, carry identical dimension, mass, stroke and speed cells, with only the forces differing. The maximum rod-load column is empty in every table. Gas force is a frame rating, not machine power, flow or pressure: the selected cylinders, gas and operating cases still decide the machine.
The company's legal name is Shanghai Orient Compressor Manufacturing Co., Ltd. (上海东方压缩机制造有限公司). A company notice of April 2017 says tender and other documents issued under that full name require the company's authorisation, and warns that another firm had used its name for spare-parts sales. Check that a quotation comes from the named entity. Checked against the manufacturer's site on 30 October 2026.
Make the process duty, package scope and acceptance test agree
Define the gas duty
Composition and impurities, suction-pressure/temperature variation, required discharge, flow reference and every normal, start-up and upset operating point.
Approve the mechanical selection
Gas and combined loads, frame/cylinders, rows, speed, stroke, lubrication, materials, packing and valves. Establish actual driver rating and site derating.
Resolve plant interfaces
Pulsation/vibration study responsibilities, cooling and utilities, package piping, relief/vent routes, controls/interlocks and foundation/maintenance drawings.
Agree acceptance and handover
Performance and mechanical tests, leakage/cleanliness where applicable, witness points, manuals, wear-parts lists, commissioning responsibilities and destination support.
Prepare an Orient process-compressor enquiry
Attach the gas-duty sheet and project requirements. Identify DF platform selection or DF-HA skid scope, and request the actual load calculation and checked drawings.
Prepare the Orient gas-duty enquiry →Questions before selecting an Orient compressor
Is a tonne-force portfolio rating the compressor's weight?
No. The company uses gas force to describe its portfolio. Request separate gas/combined loads, actual machine mass and shipping data.
Does an oil-free DF-HA cylinder mean no lubrication system?
No. Gas-cylinder lubrication and frame oil circulation are separate. DF-HA describes a main pump, cooler/filter and auxiliary prelubrication/backup pump.
Can I use the catalog's length cell for the foundation?
No. Its two-cylinder inch/mm pair is inconsistent. Use current checked drawings, loads, maintenance clearances and lifting/transport data for the selected package.
Are the DF and DF-HA bearing materials identical?
The published accounts differ: general DF describes aluminum-magnesium alloy bearings, while DF-HA specifies Babbitt main/big-end and bronze small-end bearings. Confirm the actual offered bill of materials.