Cold-drawn seamless steel pipes and tubes .
Specification: external diameter from 8mm to 350mm wall thickness from 1mm to 30mm.
Cold-drawn steel bars: Specification: from 2mm to 120mm, ¡í5mm-¡í150mm
Manufacturer approved by GL, BV, KR, ABS,DNV, NK, LR, CCS AND RINA.
Yechee provides a complete set of steel structure members for factory buildings, airport, stadium, station, bridge, thermal power plant, wind power project, commercial building & dwelling, crane system, communication tower, ocean engineering, ect. All the materials of our steel frame are c beam, z beam, h-shaped steel and thick iron plates or sheet, the grade is upon euro norm s355jrc or american norm astm a572 grade 50 or equivalent to q345b.
Yechee operates two worldwide business lines, serving the steel construction and building materials markets. The yechee employs about 25, 000 staff worldwide, including 380 senior engineers, 1, 270 first grade architects. With production capacity of 3, 000, 000 mt per year, yechee has supplied more than 5, 200 steel construction projects to over 57 countries worldwide.
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Here belowed is the scope of our products
Steel shot: s70 s110 s130 s170 s230 s280 s330 s390 s460 s550 s660 s780
Steel grit: g10 g12 g14 g16 g18 g25 g40 g50 g80 g120
Steel cut wire shot: 1.0mm 1.2mm, 1.5mm, 2.0mm
Stainless steel cut wire shot, 0.3mm, 0.4mm, 0.5mm, 1.6mm, 0.8mm, 1.0mm
Steel abrasives are used to clean a wide variety of surfaces and parts, for example
De-sanding and cleaning foundry castings
Descaling metal sheet, billets and profiles produced by the steel industry
Surface preparation prior to coating
Steel abrasives are used in the following industries and applications:
Foundries, metal producers, shot peening, surface preparation, general cleaning, granite cutting,
Chemical composition of the products:
C 0.70-1.20% mn 0.60-1.20%, si 0.40-1.20%.
Hardness:
Steel shot: 40-60hrc
Steel grit: 42-66hrc
Steel cut wire shot:1.0mm:51-53hrc ; 1.5mm:41-45hrc
Density:
Steel shot: 7.4g/cucm
Steel grit: 7.6g/cucm
Steel cut wire shot:7.8g/cucm
Microstructure: tempered marten site
High strength, long lasting ervin life: cast steel shot and grit: 2000 cycles;
Steel cut wire shot: 2800 cycles.
25kg in one bag, 40bags on one pallet, 20mt for each container
í= Applications:
Short and medium distance, indoor and protected environments. Offered as a riser, plenum, or general purpose cable,
it is used for interconnection of distribution boxes, or the distribution boxes and customer equipments, and between
floors.
í= Installations:
Installed along the wall, the roof, interlayer, canal and indoor.
í= Construction:
The cable contains 4 to 72 fibers individually buffered to 0.9 mm in a tight or semi tight construction and coded. The
cable structure depends on the number of fibers: The 4 to 12 fiber cables contain individual fibers without sub-units,In
the 16 to 72 fiber cables the fibers are grouped in the sub-units. In the 4 to 12 fiber cables, the individual fibers are
stranded and protected by aramid yarn and a PVC or LSZH jacket. In the 16 to 72 fiber cables, the fibers are grouped
into sub-units which are laid helically along the cable axis. Each sub-unit contains 4 to 6 fibers, aramid yarn and a
PVC or LSZH jacket. The 72 fiber cable consists of twelve sub-units, nine of them are stranded around a central
element made of 3 sub-units.
í=Technical Parameters:
íe Maximum Transmission Distance: 6km (Single Mode); 0.3km (Multimode)
íe Maximum Pulling Load: 100N(Short Term Installation);60N(Long Term Installation)
íe Minimum Bending Radius:
Short Term Installation: 20 x Overall Diameter
Long Term Installation: 10 x Overall Diameter (Non-Armoured);
20 x Overall Diameter (Armoured)
íe Twist (Torsion Length): 125 x Overall Diameter.
íe Working Temperature: -10íµ ~ +70íµ (PE sheath)
íe Storage Temperature: -20íµ ~ +70íµ (PE sheath)
í= Product Highlights:
íe Small diameter and light weight.
íe The high tension characteristics of the aramid yarn serving as strength member
can offer good stability in the transmission performance.
íe Compact and flexible construction are especially suitable for indoor installations.
íe Tight Buffer fibers are made from fiber rods with good linearity and low extruding output. By careful calibration of
the vacuum pumping equipment, the uniformity of the outer diameter of the tight buffer fibers can be easily achieved
with excellent strip ability.
íe LSZH jackets can be offered for indoor application for which flame retardancy is required.
íe Cutting edge production equipment, good quality materials and optimized process ensure low induced attenuation
within the operating temperature range.
íe Fiber geometry are strictly monitored to ensure superior transmission performance.
Central loose tube cable contains one tube with 2 - 24 fibers, which is filled with water blocking gel. A water swelling tape is helically wrapped around the cable core. Either aramid yarn or fiber glass is wound around the tube to provide physical protection and tensile strength. The cable is jacketed with PE for water protection purpose. For direct burial, steel wire armour and corrugated steel tape armour are applied with an optional PE
These cables are designed for transmission of anglog and digital signals, and the interconnection of electrical equipment and instruments, particular for the process control industry.
Conductors: Annealed solid copper(Class 1), stranded(Class 2), or flexible(Class 5) to BS 6360.
Insulation: PE/XLPE.
Pair Ideatification:
a) Collectively screened cables: Color coded in accordance with Color Code as per BS5308 standard.
b) Individually screened pairs: One white core and one black core in each pair. Pairs identified by numbered screen isolation tape.
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