Deciphering the Quotation for a Chinese 250-300 TPH Stone Crushing Plant: A Comprehensive Guide

The global construction and mining industries consistently demand reliable, efficient, and cost-effective crushing solutions. In this landscape, Chinese-manufactured stone crushing plants have emerged as formidable contenders, offering a compelling blend of advanced technology and competitive pricing. A 250-300 tons per hour (TPH) capacity plant represents a mid-to-large-scale operation, suitable for producing aggregates for major infrastructure projects, commercial construction, and large-scale mining operations. Understanding the quotation for such a plant from a Chinese supplier requires moving beyond a single price tag and delving into the components, specifications, and commercial terms that define the investment.

This article provides a detailed breakdown of what constitutes a professional quotation for a 250-300 TPH stone crushing plant from China, empowering potential buyers to make informed decisions.

1. Core Components: The Heart of the Quotation

A professional quotation is never just a single line item for a “complete plant.” It is a detailed Bill of Materials (BOM) that itemizes every major component. For a 250-300 TPH capacity, the configuration is critical.

A. Primary Crushing Station:
The first line of defense against large raw material (e.g., granite, basalt, limestone). The choice here significantly impacts downstream efficiency.

• Jaw Crusher: The most common choice for hard and abrasive rocks. For this capacity, a robust model like the PE-750×1060 or PE-900×1200 would be specified. The quotation should include details on feed opening size, max feed size, power rating (typically 90-132 kW), and jaw plate material (high manganese steel).
• Vibrating Grizzly Feeder (VGF): Positioned before the jaw crusher, it separates fines from the primary feed and ensures a consistent, regulated flow to the crusher. Specifications should include dimensions, grizzly bar spacing, and motor power.

B. Secondary Crushing Station:
This stage further reduces the size of the material coming from the primary crusher to prepare it for final shaping.

• Impact Crusher: Ideal for medium-hard to hard stones where a good cubical shape is desired (essential for high-quality concrete aggregate). Models like the PF-1315 or PF-1320 are common in this range.
• Cone Crusher: The preferred choice for very hard and abrasive materials. It offers lower wear costs compared to an impact crusher but may produce more flaky particles. A multi-cylinder hydraulic cone crusher (e.g., HPT300) would be specified for its automation and efficiency.

C. Tertiary/Fine Crushing Station:
For producing precisely shaped aggregates or sand.

• VSI Crusher (Vertical Shaft Impact Crusher): The ultimate machine for manufacturing high-quality cubical aggregates and artificial sand. It uses a “rock-on-rock” or “rock-on-iron” crushing principle. Its inclusion in the quotation is a sign of a plant designed for high-value end products.

D. Screening Station:
The brain of the classification process. A 250-300 TPH plant will require large, multi-deck vibrating screens to separate crushed material into various final product sizes (e.g., 0-5mm, 5-10mm, 10-20mm, 20-31.5mm).

• Specifications: The number of screens (typically 2-3), deck configuration (e.g., 3YKH-2160 or 4YKH-2460), screen mesh sizes, and motor power must be clearly stated.

E. Conveying System:
The circulatory system of the plant. The quotation must detail all belt conveyors:

• Width, length, incline angle, belt speed, and motor power for each conveyor.
• Quality of idlers, rollers, and belt material (e.g., NN200 fabric or ST1000 steel cord) is crucial for longevity.

F. Power Source & Control System:

• Electric Motors: All motors should be specified by brand (e.g., WNM/Siemens), power rating (kW), protection grade (IP55/IP65), and efficiency class.
• Control Cabinet & PLC System: A centralized control system is mandatory for a plant of this scale. The quotation should specify the PLC brand (e.g., Siemens/Schneider/Mitsubishi), the presence of touch-screen HMIs in the control room, and whether it includes remote monitoring capabilities.

2. Structural & Auxiliary Components

A comprehensive quote goes beyond just machinery.

• Steel Structure & Platforms: All support structures for crushers, screens, and conveyors must be included.
• Dust Suppression System: An environmental necessity. This can range from simple water sprinklers at transfer points to a full-fledged Baghouse Dust Collector system.
• Optional Components: These are often listed separately but are critical:
  • Generator Set: For operations in areas with unreliable grid power.
  • Wheel Loader: For feeding the primary hopper.
  • Spare Parts Package: A standard initial set of wear parts (jaw plates,

mantles

concaves

blow bars

screen meshes).

3.The Price Breakdown: FOB vs CIF Explained

The commercial terms are as important as the technical ones.

• FOB Price (Free On Board): This price includes all costs until the goods are loaded onto the ship at the Chinese port. It covers ex-works cost,

inland freight to port

port handling charges

and export customs clearance

The buyer is responsible for sea freight

marine insurance

and import clearance at their destination

FOB quotes are transparent but place logistical responsibility on the buyer

CIF Price Cost Insurance Freight This price includes everything in FOB plus the sea freight and insurance to a named port of destination CIF offers convenience but gives buyers less control over shipping choices

4Key Factors Influencing Quotation Price

Why do quotes from different suppliers vary so dramatically?
1Component Quality Tier Suppliers may use different tiers of components A crusher with genuine SKF bearings will cost more than one with unknown domestic brands
2Level of Automation A basic relay-based control system is cheaper than an advanced PLC system with IoT sensors
3Material Specifications Plants designed primarily for soft limestone will be quoted lower than those engineered for tough granite due to heavier machinery
4Supplier Reputation Established brands with proven track records command higher prices due to their R&D after-sales service
5Steel Prices Fluctuations in global steel prices directly impact manufacturing costs

5Beyond Price Evaluating Intangible Value

A low quotation can be misleading if it omits critical value-added services
Technical Support Does it include installation supervision by factory engineers?
Training Is operator training provided either in China or on-site?
Warranty What does it cover e g whole machine core components wear parts? What is its duration?
After-Sales Service What is their policy on spare parts supply? Do they have service engineers available internationally?

Conclusion
A quotation for Chinese TPH stone crushing plant should not merely be seen as price list but rather comprehensive project proposal Scrutinizing every component understanding commercial terms FOB CIF recognizing factors that drive cost differences focusing on long-term value over initial investment are all essential steps By approaching procurement process informed systematic manner buyers can leverage competitive advantages offered by Chinese manufacturers while mitigating risks ensuring acquisition durable efficient plant that delivers strong return investment years come