China National Heavy Duty Trucks held product recommendation meeting in Beijing, lightweight HOWO A7 can be hot

On October 20, 2010, China National Heavy Duty Trucks held the “Autumn Harvesting Trucks Harvesting Perfect Life Promotion Conference” in the 4S shop of DouDian Auto City in Beijing. Wang Jun, general manager of China National Heavy Duty Truck Sales Beijing Branch, attended the meeting and communicated with the users. The conference focused on the new version of lightweight HOWO A7. Its biggest selling point was the use of Hansen Lightweight Suspension System. A user immediately decided to purchase a lightweight HOWO A7 tractor.

According to reports, the weight reduction of heavy trucks has become an inevitable trend of development. Domestic truck manufacturers are all working on R&D and production of lightweight heavy trucks. China National Heavy Duty Truck Lightweight HOWO A7 uses Hendrickson rubber suspension to reduce the weight of 430kg while having buffers. characteristic. As a result, Henderson Rubber's hanging weight dropped, improving comfort and protecting the vehicle.

It is understood that this year's heavy-duty truck mixers have performed very well in the market, with a national market share of 55%, tractors up to 40%, and dump trucks up to 20%. Specific to the Beijing market, affected by the development of Nancheng, the sales of heavy trucks in Nancheng are better than those in Beicheng, especially the 5-6-meter construction vehicles have become the most popular heavy vehicles in the Beijing market.

This year, China National Heavy Duty Truck continues to seize new markets and build new bases. Up to now, Chengdu has acquired the trump card and built the Zhangqi light truck base. As the most professional heavy truck manufacturer in China, light trucks will also be the future direction of heavy trucks. At the same time, in 2011 China National Heavy Duty Truck will launch products that are integrated into the German Man Heavy Truck Technology. New products jointly developed by domestic and foreign companies are worth looking forward to.

Cementing Tools

Bow spring casing centralizers

Bow spring centralizers, both welded and non-welded is to help center the casing in the wellbore, allowing even distribution of the cement around the casing during cementing operations according to API10D standard size from 4-1/2" to 20".

Feature :

A) Designed for high restoring force and low starting& running force.

B) End collars are designed with self-locking action,which are easy to assemble.

C) Undergo special coating process to prevent from rust.

D) Can be shipped in half assemble condition for economy in shipping and storage costs.

E) Specification:4-1/2" to 20". any special size or combination available on request.

Technical parameters:

No	Specification	Bow type	ID(mm)	Length(mm)	Max OD (mm)	Bow spring
1	5-1/2"*8-1/2"	I .Ⅱ	142-148	600±50	225±5	5
2	7"*8-1/2	I .Ⅱ	181-186	600±50	235±5	6
3	9-5/8"*12-1/4"	I .Ⅱ	250-255	600±50	330±5	8
4	10-3/4"*12-1/4"	I .Ⅱ	274-276	600±50	330±5	9
5	13-3/8"*17-1/2"	I .Ⅱ	342-347	600±50	450±5	11
6	20"*26"	I .Ⅱ	510±1	600±50	660±5	12

Note :â… (single bow),â…¡(double)

Cementing plugs:

Cementing plugs from high performance material such as rubbers and phenolic resins.our cementing plugs are specially designed with a positive wiping action to ensure that the casing is clean, we have both conventional standard plugs and non-rotating plugs.

Top plugs

The top cementing plug is designed to exert continuous pressure on the casing wall. The core is made of aluminum or phenolic depending on the application and well conditions, the tapered base fits the cavity of the bottom plug initiating a positive seal. A solid rubber top plug is also available.

Bottom plugs:

Like the top cementing plug,the fins and tail section provide positive wiping action. Fins also serve as a seal while cementing. The core of bottom plug is alao made of special material such as aluminium or phenolic resins depend on the application and well conditions, a rubber diaphragm at the top bottom plugs ruptures after the plug is seated allowing cement to flow through

TECHNICAL PARAMENTERS

Type	Sizes	Working temperature	Working pressure	Burst pressure	hardness
Top plug&bottom plug	4-1/2",5-1/2",6-5/8",7",8-5/8",9-5/8" standard/ non rotating	-30℃ to 150℃	≥15MP	1MP-2MP	75-95
	13-3/8",20"standard/ non rotating	-30℃ to 150℃	≥10MP	1MP-2MP	75-95

Float collar and float shoe

Float equipment serves the backbone of casing equipment used during primary cementing operations, float equipment guides the casing to total depth and prevents contaminated mud from entering the casing. Also,it provides a landing point for casing wiper plugs, reinforces the lower end of the casing string, and ensures greater accuracy of cement slurry displacement.

FEATURES:

API 5CT,API 5B,API RP 10F rating,china petroleum department standarc SY/T5618-2000.

Rounded nose profile helps guide the casing string(only for float shoe).

The valve is made with phenolic material and molded with high strength concrete. Both the calve and concrete are easily drillable with PDC or rock bits.

High strength design ensure excellent performance for flow endurance and back pressure holding.

Automatically non-rotational groove design ensures corresponding cementing plugs drilled out quickly(only for non-rotating float collar).

Single valve and double valve versions are available. Spring structure and bal structure valve are available: insret type and normal type are available.

Material and size:

API CASING GRADE: J55,K55,N80,P110,L80,etc.

SIZE VARY FROM 4"TO 20"

AVAILABLE CONNECTIONS:

API5RD CONNECTIONS:LTC,STC,BTC

Solid rigid casing centralizers

Rigid centralizers are an integral part of the cementing process. They provide the mechanism that centers the casing in the hole and allows uniform cement flow around the casing to help protect it at all point. Several styles of centralizers are available for matching different well specification and hole size,including turbulence generating designs that help clean the annulus and distribute the cement more evenly and uniformly. All models offer ample clearance for fluid passage and are extra effective in centering the casing, even in highly deviated hole and improve cement flow by reducing the effects of channeling.

Technical parameters

Model	Style	Max OD(mm)	ID(mm)	Length(mm)
GF4-1/2x6	â… .â…¡.â…¢	145	116.5	200
GF5x6	â… .â…¡.â…¢	145	129	200
GF5-1/2x8-1/2	â… .â…¡.â…¢	205-210	142	200/300
GF6-5/8x8-1/2	â… .â…¡.â…¢	205-210	171	200/300
GF7-8-1/2	â… .â…¡.â…¢	205-210	181	200/300
GF7-9-1/2	â… .â…¡.â…¢	225-235	181	200/300
GF7-9-5/8	â… .â…¡.â…¢	225-235	181	200/300
GF9-5/8x12-1/4	â… .â…¡.â…¢	300-305	248	200
GF13-3/8-17-1/2	â… .â…¡.â…¢	430-435	346	200

Note: GF series rigid casing centralizer, classified as straight strip type (typeâ… ),spiral(type â…¡),roller type(type â…¢).

Stop collar

Stop collar is used to hold centralizers or cement baskets on any position casing, which ensures the position of centralizers or cement basket to meet the design, the stop collars are available in two types hinges type,slip on type, the stop collars can be installed on casing to limit the axial movement of centralizers and cement baskets.

Usage

1. Fastening screw stop ring when use, first set into the casing ,and then using a wrench to tighten the screws.

2. Fixed screw type when use ,first set into the casing,and then insert screws,Type in with a hammer.

3. Snap fit stop ring, direct stop ring button on the casing,use pin lock, then knocked into the screw.

Hinged bolted stop collars

An economical collar suitable for sub-critical annular tolerances,available in the size range 4-1/2" to 20",it has a cross bolt design which makes it an efficient and user friendly device.

Hinged spiral nail stop collars

Available in the size rang 4-1/2"-20",this device can be in both upset and non-upset casing to provide maximum clearance during rotation. It has a grove in the middle into which a spiral nail can be driven for improved grip on the casing, the broader firmly grips the collar into position around the casing.

Hinged stop collars with set screw

Available in the size rang 4-1/2" to 20", this device has a high cost-utility ratio. This hinged collar with a row of set screw position easily and firmly around the casing.

Slip on stop collars with set screw

This slip-on set screw device is recommended for small hole operations,available in size rang 2-7/8" to 20"and is gripped by a row of screw, this is a heavy duty device.

Cementing tools

Henan Dongfanglong Machine Manufacture Co., Ltd , https://www.eastlongmachine.com