>>>How to prevent hidden danger in children's room
The relevant national regulations have defined the indoor environment indicators of children's rooms: carbon dioxide, less than 0.1%. If the concentration increases, the child may feel nauseous, headache and other discomfort; carbon monoxide, less than 5 mg/m3. The most common poisonous gases in the air are likely to damage children's nerve cells, which are harmful to children's growth; the total number of bacteria is less than 10 pcs/dish; temperature, summer indoor temperature is controlled below 28°C, winter is above 18°C, and relative humidity is 30% - 70% between. If it is too low, it may cause respiratory damage in children. If it is too high, it is not conducive to evaporation of sweat; noise, noise in children's rooms should be controlled below 50 decibels.
How to prevent children from being polluted by dirty indoor air? Experts suggest: Use natural and harmless materials during decoration, ventilate after renovation, remove odors before moving in; Children are allowed to take outdoor activities and breathe fresh air; the room is equipped with an air purifier.
Children's room entrance decoration interior decoration air purifier room window purifier
Malleable Iron Pipe Fittings normally use for water pipelines,also can use for oil and gas. Because some of them need Galvanizing, so some clients all it G.I fittings or Iron Fittings. The fittings included Elbow,Nipples, Tees, Caps, Unions, plugs, etc. The details as follow:
Standard:
For BS Pipe Fittings: BS 21:1985
For ANSI pipe fittings: ANSI/ASME B1 20.1-1983
For DIN pipe fittings: DIN 2950/1692/2999
Mechanical Properties:
1)Tensile strength>or=330Mpa
(2)Bending strength>or=520Mpa
(3)Shearing strength>or=284Mpa
(4)Elongation eate>or=8%
(5)Hardness<or=HB150
Hydraulic Test
Test pressure:2.5Mpa
Working pressure:1.6Mpa
Chemical Compositions:
C:2.6%-2.8% Si:1.5%-1.8%
Mn:0.55%-0.7% S:0.25%-0.3%
Type:
Beaded, Beaded with rib, Banded,Banded with rib,Plain
Finishing:
Black, Hot-dipped galvanized, Electro-galvanized
Beaded Type:
Banded type:
Malleable Iron Pipe Fittings
Malleable Iron Pipe Fittings,Galvanized Fittings,Iron Fittings,Zinc Coated Fittings
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