The size of the head
Reducer reducer decorated capitulum, reducer, and went all the way through.One of the chemical pipe fittings, used for two different tube
The connection between the diameter of the pipe.According to the shape of the different, divided into concentric big small head and eccentric reducer.
Size head size materials including stainless steel (304304 l316316l), alloy steel, carbon steel reducer, reducer
Made of 20 # steel and Q235, Q345, 16 mn etc.The main producing area in hebei province and taking mengcun hui from salt mountain county
National standard American standard British standard as well as a variety of non-standard products.
Power division standard GD0506 ~ 0507 form a complete set of pressure vessel flange, tubesheet corresponding standard: JB/T4700-4707 -
2000 national standard (GB/T9112-2000), the mechanical standard (JB/T81-1959, JB/T74-1994
), plus standard (SH3406-1996), Marine standards GB/T10752-1999, the chemical standards
(HG/T5010-1958, HG/T20592-2009), and so on.Export forged steel flange in the American ASTM material
Reducer (reducer) is a kind of pipe fittings used in pipe size.Usually adopted for reducing the forming process of repression
And hole enlargement to neutralize or reducing hole enlargement, for some specifications of the reducer and stamping can be applied.
Reducing/forming hole diameter
Size reducing forming technology of the head is with the head big end diameter equal to the size of the pipe into the forming mould, pass along
Tube axial direction of repression, shrink along the cavity movement and metal forming.According to the size of the reducer reducer,
Divided into one of pressing or more press forming.
Besides using steel as raw material to produce the size of the head, on the part of the specifications of the size of the head can also be used steel plate by stamping
Process for production.Used by stretching die shape inner surface size design, with reference to the size of the head with the die
After the steel plate stamping stretch forming.
Size head before bonding, use dry cloth to bell mouth and socket lateral wipe the handle, must be used when the surface with oil pollution
Acetone is wiped clean, have the following points to note:
1, control diameter: DIN standard (DN10-6), 3 a/IDF criteria (1/2 "to 6"), which ran on ISO standards
(12.7-152.4 Ф Ф);
2, the international industry standard: DIN, ISO, SMS, 3 a, IDF, etc;
3, the product material: 304, 316, 316 l stainless steel;
4, quality and use: size head inside and outside processing with high-grade polishing equipment, meet the surface precision requirements;This product
Applicable to the dairy, food, beer, beverage, pharmaceutical, cosmetics and other industrial fields;
5, external processing, can according to user requirements to map, sample processing non-standard products;
6, connection mode: clamp (fast), welding, thread (live).
Pay attention to the size of the head is also suitable for pipe diameter changes in environmental protection industry, are generally steel plate welding and cutting
Into, pipe diameter sizes and materials
Standard system of folding
The pipe flange on international standard, there are two main system which represented by Germany DIN (including the former Soviet union) European tube
Flange system and represented by the United States ANSI flange pipe flange system of America.In addition, Japan JIS
Tube flange, but generally only used in petrochemical unit for the utilities, and less affected in the world.now
Will the tube flange profile below:
Carbon steel, ASTM/ASME A234 WPB, WPC
Alloy: ASTM/ASME A234 WP 11-12-1 - WP WP WP 22 - WP 91-5 - WP WP911, 15 mo3
15 crmov, 35 crmov
Stainless steel, ASTM/ASME A403 WP 304-304 - l - 304 - h - 304 ln - 304 n
ASTM/ASME A403 WP 316-316 l - 316 - h - 316 ln - 316 - n - 316 ti
ASTM/ASME A403 WP 321-321 - h ASTM/ASME A403 WP 347-347 - h
Low temperature steel, ASTM/ASME A402 WPL3 - WPL 6
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-65
Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon luo drain, PVC, PPR, RFPP (reinforced polypropylene
In producing method
Can be divided into pushing, pressing, forging, casting, etc.
In manufacturing standards
Can be divided into the national standard and electric standard, vessel standard, standard, water standard, American standard, Germany standard, Japanese standard, the standard and so on.
Radius of curvature to points
Can be divided into long radius elbow and short radius elbow.Long radius elbow refers to its radius of curvature is equal to 1.5 times of the pipe
Outside diameter, that is, R = 1.5 D;Short radius elbow refers to its radius of curvature is equal to the pipe diameter, R = 1.0 D.(D to bend
Head diameter, R for the radius of curvature).5. If according to the grades of pressure points: about 17 species, and the tube of the United States
Is the same, the sub standard has: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD,
Sch40, Sch60, Sch80s, XS;Sch80, SCH100, Sch120, Sch140, Sch160, XXS;its
STD and XS is the most commonly used in two kinds.