HungWan Brand PHC Piles

    The product is manufactured and managed by ZhongShan HungWan concrete piles Co.Ltd.. and HungWan concrete piles(Hui Zhou) Co. Ltd., which are national advanced joint venture companies. The two companies introduced the modern equipment and technology from Japan and the quality of the product come up to the standard of JISA5337-1995 (Japan). In 1993,HW PHC piles awarded "the national new product". In 1994,HW PHC pile was approved by relevant departments of Hong Kong Government and widely used in Hong Kong. It is the first pile manufacturer in mainland of China entering the Hong Kong market.In 1995, as the first enterprise of the cement products industry in the mainland to pass the ISO9002 quality system assessment and obtained the registration certificate from China, the United Kingdom and the United States. In 1997, HW PHC piles awarded" the famous brand product of the Guangdong provinc", as the only one in the same kind products in the Guandong province. In 1999, it awarded 'the first class quality certification of the cement building materials enterprises' in the Guangdong province. The laboratory has past the assessment of HOKLAS (Hong Kong) the only one of the same kind of products manufacturers which got the assessment up to now.

    Yearly Output: 800 thousand meters

    Features : 1. High concrete strength, great bearing capacity for per pile;

                    2. Durable and high penetrating power;

                    3. Have a larger choosing scale and easy to be distributed;

                    4.It can be suitable for more kinds of supporting soils, for example, the soil's power-holding layers change greatly and usually.

                    5.Have an advantage in aggregation profit.

                    6.The preparing period of pro-operation is short;

                    7.The speed of operation is fast and the operation period is short;

                    8. Operation -site is clean and tidy, no environment polluting;

                    9.High striking-resistance and high corrosive-resistance;

                    10.Easy to be supervised and be famed as "Basement which can be seen".

Usage scale: Widely used as foundation in civil and industry buildings, highways, bridges, port works etc, especially used in multi-story and tall buildings.

Specifications: Ø400×97, Ø500×100, Ø500×125, Ø600×105, Ø600×130mm , etc, the lengths scale is from 5m to 12m.

*Standard drawing of HW-PHC piles


*Properties of materials

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*Comply with GB

Dimensions

Properties of  HW-PHC piles

*Comply with JIS

Dimensions

Properties of  HW-PHC piles

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*Cross-fin Shoe

*Conical Shoe

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*Transportation and Stacking

    Transported by truck or ship. Basement of the truck or ship must be smoothly and steady with stable enclosure on both sides; The piles on the ground layer must be supported by woods; Piles transported by layers should be stable by cable with pegs on both sides in case of slipping.

    Bumping and colliding must be avoided during transportation in case to produce breaking and harmful strikes.

    Two-point supporting measure or hanging on both end measure should be taken during loading and unloading operation. Piles are put up and down lightly. Throwing, colliding and rolling are strictly prohibited.

    Stacking ground must be smoothly and near the work-site if piles are stored on the site; Piles must be stored separately according to pile's size .length and the order of use. The phenomenon such as large-pile up and small-pile down or long-pile up and short-pile down are forbidden. One-layer stacking- style must be taken to the greatest extent with woods supporting the pile ; If more-layer stacking style has to be taken, the number of layers must be no more than two and every two layers must be separately by woods with pegs on both sides to make them stable.

    The woods used to support the piles must have the same thickness and hard texture. The supporting points of every layer should not be less than two and the sites must be down the lifting points and sites are on the same level.Piles on site should not be used for other things in case to effect their structure properties.

    Lifting piles at one point and the point should be on the site that has been marked on the pile body. Put piles up and down slightly. Casting colliding and rolling must be prohibited; Machine for lifting piles should be used while driving piles from more-layer pile heaps.

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*Main points of driving piles

    The operation ground must be smoothly and strong enough to support the driving machine.

    Mark the driving points on the operation ground punctually with maximum deviation no more than 20mm and the minimum distance between any two piles takes p·D (D is external diameter of pile)

    The first pile's gradient must be less than 0.5% when it goes into the ground, and be corrected by means of equipment in at least two vertical directions.

    The central lines of the pile hammer pile cap and pile body must be coincident. It should be corrected when the pile's gradient is larger than 0.8% and it is strictly prohibited being corrected just by moving the driving machine rudely.

    When operating on thicker clay or powder clay, every pile had best be driven continuously at one time and avoid jointing piles near the design depth.

When piles need be joint together, a direction-leading equipment need to be displayed and the two piles to be joint together must be remain vertical with the gradient deviation no more than 2mm.

    The two end plates of pile must be clean before being joint, especially the slope part must be so clean as to have metallic shining.

    Take electric welding measure to joint piles. To weld completely and the welding rod must be continuous and full. Clean the welding surface before welding again. The pile should be cooled naturally for no less than 10 min after welding.

    The depth of pile-following operation must be no more than 2 m when pile-following operation is needed. Ensure the gradient of pile-following machine is coincident with that of pile body.

    The cushions of the pile, the hammer and the pile-following machine should be checked and replaced at timely intervals to ensure even distribution of driving energy on pile-head.

    The total number of hammer-brow had best be less than 2000 and the number should not be more than 250 when the pile has only 1m left on the ground. The driving depth of the stopping hammering process had best no less than 20mm every10 hammer blows.

    If piles need be cut, the pile-cutting machine must be used. It is prohibited to cut piles using hammer or just cutting piles rudely.

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*Pile-driving Machine

    Diesel pile-driving machine that can shift by itself with three sites to support the track should be chosen. That kind of pile-driving machine with hammer dropping freely must not be used. Tube –shaped diesel pile-driving machine is the best.

    The frame of the pile-driving machine should have enough strength, stiffness and stability to resist the strong shaking in the process of driving.

    Choose the different kinds of diesel hammers according to such factors as the pile's external diameter, the strength of pile, the driving ground situation, the depth of pile's driving into ground and vertical bearing capacity of each pile and accord with the strong hammer-lower driving operating principle.

    Refer to the following table to choose the diesel pile-driving hammer, if it is a Hung Wan brand PHC.

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*Pile cap and its cushions

    The pile cap must have enough strength, stiffness and strike resistance. It is a cylinder made of steel or cast steel with a effective depth about 350~400mm and inner diameter is 20~30mm larger than pile's external diameter.

    Establish elastic pile cushions between pile cap and pile end. The pile cushion can be made of sack , hard paper, kraft paper bag and plywood, pressed by hammer to make it hard and have the same thickness no less than 120mm.

    Establish hammer cushion between pile cap and pile-hammer. Hammer cushion can be made of hard wood with vertical grain or wire rope, with a thickness about 150~200mm.

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*Pile-deliver machine and its cushion

    The pile deliver machine must have enough strength, stiffness and strike resistance. It is made of steel or cast steel and its length can meet the depth which the pile must be delivered.

    The top and bottom ends of pile-deliver machine must be smooth and on a level and must be vertical to the central axls of the pile-deliver machine. The bottom end must open a hole.

    It had best to use sleeve-style or bolt-style pile-deliver machine. The depth of sleeve can be taken 250~350mm while the inner-diameter is 20~30mm larger than the external diameter of the pile; The depth of bolt can be taken 200~300mm while the external diameter is 20~30mm smaller than the inner diameter of the pile.

    Establish cushion between pile-deliver machine and the head of pile, while can be made of sack, hard paper or kraft paper bag and so on. The layer number had best take two.

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