Sntdrain Dl Series

wire roller ú¦The wire roller (DL series) is the commonly used component for the wire passing, and it is used in the wire passing position of the coil winding machine and the textile machinery as well.
The porcelain ring is trapped out of the bearing, it will rotate by the thread and wire passing on the surface of the ring. Thus the sliding friction has been converted to the static friction. But at the start and stop, in order to overcome the inertia, there will be a partial sliding friction.
The difference between the usage of wire roller and ceramic ring is: there is a sliding friction between thread, wire and the surface of the ceramic ring, so it is applied for the smaller angle of the wire, lower pressure and other such kind of less demanding occasions. The wire roller is mainly used of static friction (part sliding friction); it is applied for the bigger angle of the wire, a certain pressure and other such kind of higher occasions. Recently, as improved processing technology, ceramic rings can also be used for important occasions, further illustration will be provided when orders.
The surface polish degree of the porcelain ring reaches Ra0.2; the beating during rotation is under 0.15. We select the 99% AL2O3 as the material with the hardness of HRa88 and the density of 3.85.
There are three types of the wire roller---wire roller (DL series), ceramic roller (NT-2 series) and the wire jump preventer (NT series). Two nylon sidewalls have been put to the both side of the ceramic ring and the bearing, it combines one wire roller. Two ceramic sidewalls have been put to the both side of the ceramic ring and bearing, there is a reverse hook or a ball to prevent the thread jumping out above the ring. The roller which is without the ceramic sidewalls is called ceramic roller.

wire roller ú¦The wire roller (DL series) is the commonly used component for the wire passing, and it is used in the wire passing position of the coil winding machine and the textile machinery as well.
The porcelain ring is trapped out of the bearing, it will rotate by the thread and wire passing on the surface of the ring. Thus the sliding friction has been converted to the static friction. But at the start and stop, in order to overcome the inertia, there will be a partial sliding friction.
The difference between the usage of wire roller and ceramic ring is: there is a sliding friction between thread, wire and the surface of the ceramic ring, so it is applied for the smaller angle of the wire, lower pressure and other such kind of less demanding occasions. The wire roller is mainly used of static friction (part sliding friction); it is applied for the bigger angle of the wire, a certain pressure and other such kind of higher occasions. Recently, as improved processing technology, ceramic rings can also be used for important occasions, further illustration will be provided when orders.
The surface polish degree of the porcelain ring reaches Ra0.2; the beating during rotation is under 0.15. We select the 99% AL2O3 as the material with the hardness of HRa88 and the density of 3.85.
There are three types of the wire roller---wire roller (DL series), ceramic roller (NT-2 series) and the wire jump preventer (NT series). Two nylon sidewalls have been put to the both side of the ceramic ring and the bearing, it combines one wire roller. Two ceramic sidewalls have been put to the both side of the ceramic ring and bearing, there is a reverse hook or a ball to prevent the thread jumping out above the ring. The roller which is without the ceramic sidewalls is called ceramic roller.

D(+)-malic acid

CAS NO.·ª6915-15-7(Standard: FCCIV,1996)
Name·ªD(+)-malic acid
Function·ª
DESCRIPTION:white crystals or white crystalline powder, soluble in water, alcohol and other organic solvent. Its aqueous solution is acidic.
Chemical Name:R-hydroxy butanedioic acid
Molecular Formula:C4H6O5
Molecular Weight:134.09
SPECIFICATION(FCCIV,1996):
Assay(as C4H6O5):99.0%~100.5%
Optical purity (e.e%,Chiral HPLC):98.0% Min
Specific Rotation (c=8.5,H2O):+1.6 ~+2.6
Arsenic(As2O3):2.0mg/kg Max
Heavy Metal(Pb):20mg/kg Max
Residue On Ignition:0.1% Max
Chloride[Cl-]:0.01% Max
Sulfate :0.04% Max
Fumaric Acid:0.5% Max
Maleic Acid:0.05% Max

Cas no.6915-15-7(standard: fcciv, 1996)
Named(+)-malic acid
Function
Description:white crystals or white crystalline powder, soluble in water, alcohol and other organic solvent. Its aqueous solution is acidic.
Chemical name:r-hydroxy butanedioic acid
Molecular formula:c4h6o5
Molecular weight:134.09
Specification(fcciv, 1996):
Assay(as c4h6o5):99.0%~100.5%
Optical purity (e.E%, chiral hplc):98.0% min
Specific rotation (c=8.5, h2o):+1.6 ~+2.6
Arsenic(as2o3):2.0mg/kg max
Heavy metal(pb):20mg/kg max
Residue on ignition:0.1% max
Chloride[cl-]:0.01% max
Sulfate :0.04% max
Fumaric acid:0.5% max
Maleic acid:0.05% max

Product Name : L-(-)-Carnitine,CN
Alias : 3-Hydroxy-4-(trimethylammonio) butanoate; Vitamin BT
CAS No.: 541-15-1
Molecular Formula : C7H15NO3
Molecular Weight : 161.20
Appearace : white crystalline or crystalline powder
Character: MP: 210-212 degree ; specific rotation-29.0- -32.0íp ; pH 5.5-9.5 Water NMT4.0% ; Ignition residue: NMT0.5% ; chlorid NMT0.4% ; Assay 97.0-103.0%
Solubility : Soluble in water, slightly soluble in ethanol, insoluble in acetone

Name: Ethyl vanillin
Another name: 3-Ethoxy-4-hydroxybenzaldehyde; Bourbonal; Burbonal;
Molecular formula :C9H10O3
Molecular weight:16617
CAS NO: 121-32-4
Appearance: white to pale yellow needle-like crystalline powder; MP: 76 í¦C;BP: 285 ¿¼C;
Loss on drying:NMT1.0%; Residue on ignition : NMT0.1%; Slightly soluble in water.
Use: It widely used in foods additive, such as chocolate, ice cream, beverages and daily cosmetics
Package:25kg/drum

We regularly export Silica Gel in large quantity.
We handle of a series of silica gel in different usages, such as for Column-layer Chromatography, thin-layer Chromatography,air drying, catalyst carrier, liquid drying,etc.

We are the most competitor in the field of SILICA GEL. We also could supply the goods according to your specification.
We also supply Silica Alumina Gel,Silicic Acid, etc.

the following list is our product-- Silica gel in different usage :

FNG Silica Gel : Spherical Sharp, used for air drying in the air separating process for various industrial gases

C Type Silica Gel : translucent Spherical Sharp, used for drier, adsorbent and catalyst carrier

B Type Silica Gel : transparent Spherical Sharp,mainly used as liquid adsorbents,Struture lying between macro-pored and fine-pored silica gel

Blue Silica Gel :lumps or Spherical Sharp,After absorbing Moisture ,it turns from Blue to red,visually indicating the relative humidity of the given environments.

DL Blue Silica Gel : lumps or Spherical Sharp, used as humidity indicator or drier in judging if the adsorption & drying process is up to the requirements

Fine-Pored Silica Gel : lumps or Spherical Sharp,used for drying and moistureproof

Macro-pored Silica Gel : lumps or Spherical Sharp, used for moistureproof packing and dehydration and purification of industrial gases

Silica Gel (tablet) : used for moistureproof for pharmaceutical & food industry

Silica Gel for variable +C pressure adsorption : silimar to fine-pored Silica gel , Its selective adsorptive capability is higher than fine-pored silica gel.

Silica gel for Column layer Chromatography : Since the amount of time ,it takes to adsorb the various substance ,it can achieve the separation and purification from the mixed components, used for refining petroleum and pharmaceutical industry.

Silica gel for thin layer Chromatography : used for analysis and separation of various natural and synthetic substances.

Cat Sands : used for pets , a ideal pet waste cleaner

Silicic Acid : used for fusion agent for processing tungsten filaments

Silica Alumina Gel : faint yellow molecular formula : SiO2. NAl2O3.mH2O , used for dewatering of natural gas, adsorption and separation of light hydrocarbon

Activated Silica Gel : used for identifying poisonous and harmful gases for atmospheric monitoring & mining industry