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.
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
Applications:
Long distance outside telephone, catv, data, communications.
Installations:
Installed in duct, self supporting (figure 8 self supporting or adss all dielectric self supporting) and direct burial
(with armoring).
Construction:
The cable consists of 5 to 36 elements stranded in up to 3 layers around a central strength member and bound in a
Jacket. The elements are usually fiber containing tubes. However, fillers are also used, when needed to preserve cable
Geometry. Two to twelve color coded fibers are loosely laid in each tubes filled with water-blocking gel.
Technical parameters:
Maximum transmission distance: 6km (single mode); 0.3km (multimode)
Maximum pulling load: 1500-2700 n (short term installation); 900-1500n (long term installation)
Minimum bending radius:
Short term installation: 20 x overall diameter
Long term installation: 10 x overall diameter (non armored); 20 x overall diameter (armored)
Twist (torsion length): 125 x overall diameter
Working temperature: -40íµ ~ +70íµ (pe sheath)
Storage temperature: -50íµ ~ +70íµ (pe sheath)
Product highlights:
All the fiber containing tubes are placed in concentric layers around the central member; through the control of
The twist length, the fiber cable can achieve better pulling load and operating temperature.
Tube materials are water resistant and can sustain high tension. Being filled with special water-blocking gel, the
Tube can provide water protection for the fibers inside the tube.
Central member, which is usually either made of dielectric frp, or solid/ stranded steel coated with polyethylene,
Are placed at the centre of the cables.
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
Applications:
10base-t, 100base-t4, 100base-tx, 100base-vg-anylan, 155mbps atm, 622mbps atm
Working frequency:
1-100mhz
Technical parameters:
Characteristic impedance: 100ía15ª+
Nominal velocity of propagation(nvp): 69%
Maximum dc resistance: 9.38ª+/100m
Maximum mutual capacitance: 5.6 nf/100m
Maximum capacitance unbalance: 330 pf/100m
Maximum resistance unbalance: 5%
Maximum propagation delay skew: 30 ns/100m
Maximum propagation delay: 536 ns/100m 100 mhz
Minimum bending radius: 10 x overall diameter
Voltage rating: 60v rms
Maximum pulling load: 80n
Working temperature: -20 íµ ~ +60íµ
Storage temperature: -5íµ ~ + 50íµ
Flame retardancy: ul 1581 (cm jacket); ul 1666 (cmr jacket); ul 910 (cmp jacket); iec 60332-1 (frpvc
& lszh jacket); iec 60332-1 & iec 60332-3c (lsfroh jacket)
Product highlights:
Provide excellent bandwidth beyond 100 mhz.
Designed for use in data and voice backbone application.
Meet the strict flame retardancy and environmental requirements in europe and us.
Easily identifiable color code for ease of installation.
Transmission properties:
Freq: 100
(mhz)
í= applications:
10base-t, 100base-t4, 100base-tx, 100base-vg-anylan, 155mbps atm, 622mbps atm, 1000base-t
í= working frequency:
1-100mhz
í= technical parameters:
Characteristic impedance: 100ía15ª+
Nominal velocity of propagation(nvp): 69%
Maximum dc resistance: 9.38ª+/100m
Maximum mutual capacitance: 5.6nf/100m
Maximum capacitance unbalance: 330pf/100m
Maximum resistance unbalance: 5%
Maximum propagation delay skew: 30 ns/100m
Maximum propagation delay: 536ns/100m 100mhz
Minimum bending radius: 10 x overall diameter
Voltage rating: 60v rms
Maximum pulling load: 80n
Working temperature: -20íµ ~ +60íµ
Storage temperature: -5íµ ~+50íµ
Flame retardancy: ul 1581 (cm jacket); ul 1666 (cmr jacket); ul 910 (cmpjacket); iec 60332-1 (frpvc
& lszh jacket); iec 60332-1 & iec 60332-3c (lsfroh jacket)
í= product highlights:
Provide excellent bandwidth beyond 200 mhz.
Designed for use in data and voice backbone application.
Meet the strict flame retardancy and environmental
Requirements in europe and us.
Easily identifiable color code for ease of installation.
Different jacket options available for choice.
í= transmission properties:
Freq: 200
(mhz)
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