Petroleum, chemical, machinery, electric power, shipbuilding
papermaking, construction, etc
Payment
L/C, T/T
Packing
Wooden case or as customers'requirements
Advantage
1.special design available according to requirement.
2.anti-corrosion and high-temperature resistant with black painting
3.all the production process are made under the ISO 9001:2000
sttictly.
Nominal Diameter
Outside Diameter
Center to End
D1
D2
DN
NPS
C
M
Series A
Series B
Series A
Series B
15×15×15
1/2×1/2×1/2
21.3
18
21.3
18
25
25
15×15×10
1/2×1/2×3/8
21.3
18
17.3
14
25
25
15×15×8
1/2×1/2×1/4
21.3
18
13.7
10
25
25
20×20×20
3/4×3/4×3/4
26.9
25
26.9
25
29
29
20×20×15
3/4×3/4×1/2
26.9
25
21.3
18
29
29
20×20×10
3/4×3/4×3/8
26.9
25
17.3
14
29
29
25×25×25
1×1×1
33.7
32
33.7
32
38
38
25×25×20
1×1×3/4
33.7
32
26.9
25
38
38
25×25×15
1×1×1/2
33.7
32
21.3
18
38
38
32×32×32
1.1/4×1.1/4×1.1/4
42.4
38
42.4
38
48
48
32×32×25
1.1/4×1.1/4×1
42.4
38
33.7
32
48
48
32×32×20
1.1/4×1.1/4×3/4
42.4
38
26.9
25
48
48
32×32×15
1.1/4×1.1/4×1/2
42.4
38
21.3
18
48
48
40×40×40
1.1/2×1.1/2×1.1/2
48.3
45
48.3
45
57
57
40×40×32
1.1/2×1.1/2×1.1/4
48.3
45
42.4
38
57
57
40×40×25
1.1/2×1.1/2×1
48.3
45
33.7
32
57
57
40×40×20
1.1/2×1.1/2×3/4
48.3
45
26.9
25
57
57
40×40×15
1.1/2×1.1/2×1/2
48.3
45
21.3
18
57
57
50×50×50
2×2×2
60.3
57
60.3
57
64
64
50×50×40
2×2×1.1/2
60.3
57
48.3
45
64
60
50×50×32
2×2×1.1/4
60.3
57
42.4
38
64
57
50×50×25
2×2×1
60.3
57
33.7
32
64
51
50×50×20
2×2×3/4
60.3
57
26.9
25
64
44
65×65×65
2.1/2×2/1/2×2.1/2
73
76
73
76
76
76
65×65×50
2.1/2×2/1/2×2
73
76
60.3
57
76
70
65×65×40
2.1/2×2/1/2×1.1/2
73
76
48.3
45
76
67
65×65×32
2.1/2×2/1/2×1.1/4
73
76
42.4
38
76
64
65×65×25
2.1/2×2/1/2×1
73
76
33.7
32
76
57
80×80×80
3×3×3
88.9
89
88.9
89
86
86
80×80×65
3×3×2.1/2
88.9
89
73
76
86
83
80×80×50
3×3×2
88.9
89
60.3
57
86
76
80×80×40
3×3×1.1/2
88.9
89
48.3
45
86
73
80×80×32
3×3×1.1/4
88.9
89
42.4
38
86
70
90×90×90
3.1/2×3.1/2×3.1/2
101.6
-
101.6
-
95
95
90×90×80
3.1/2×3.1/2×3
101.6
-
88.9
89
95
92
90×90×65
3.1/2×3.1/2×2.1/2
101.6
-
73
76
95
89
90×90×50
3.1/2×3.1/2×2
101.6
-
60.3
57
95
83
90×90×40
3.1/2×3.1/2×1.1/2
101.6
-
48.3
45
95
79
100×100×100
4×4×4
114.3
108
114.3
108
105
105
100×100×90
4×4×3.1/2
114.3
108
101.6
-
105
102
100×100×80
4×4×3
114.3
108
88.9
89
105
98
100×100×65
4×4×2.1/2
114.3
108
73
76
105
95
100×100×50
4×4×2
114.3
108
60.3
57
105
89
100×100×40
4×4×1.1/2
114.3
108
48.3
45
105
86
125×125×125
5×5×5
141.3
133
141.3
133
124
124
125×125×100
5×5×4
141.3
133
114.3
108
124
117
125×125×90
5×5×3.1/2
141.3
-
101.6
-
124
114
125×125×80
5×5×3
141.3
133
88.9
89
124
111
125×125×65
5×5×2.1.2
141.3
133
73
76
124
108
125×125×50
5×5×2
141.3
133
60.3
57
124
105
150×150×150
6×6×6
168.3
159
168.3
159
143
143
150×150×125
6×6×5
168.3
159
141.3
133
143
137
150×150×100
6×6×4
168.3
159
114.3
108
143
130
150×150×90
6×6×3.1/2
1, 68.3
-
101.6
-
143
127
150×150×80
6×6×3
168.3
159
88.9
89
143
124
150×150×65
6×6×2.1/2
168.3
159
73
76
143
121
200×200×200
8×8×8
219.1
219
219.1
219
178
178
200×200×150
8×8×6
219.1
219
168.3
159
178
168
200×200×125
8×8×5
219.1
219
141.4
133
178
162
200×200×100
8×8×4
219.1
219
114.3
108
178
156
200×200×90
8×8×3.1/2
219.1
-
101.6
-
178
152
250×250×250
10×10×10
273
273
273
273
216
216
250×250×200
10×10×8
273
273
219.1
219
216
203
250×250×150
10×10×6
273
273
168.3
159
216
194
250×250×125
10×10×5
273
273
141.3
133
216
191
250×250×100
10×10×4
273
273
114.3
108
216
184
300×300×300
12×12×12
323.9
325
323.9
325
254
254
300×300×250
12×12×10
323.9
325
273
273
254
241
300×300×200
12×12×8
323.9
325
219.1
219
254
229
300×300×150
12×12×6
323.9
325
168.3
159
254
219
300×300×125
12×12×5
323.9
325
141.3
133
254
216
350×350×350
14×14×14
355.6
377
355.6
377
279
279
350×350×300
14×14×12
355.6
377
323.9
325
279
270
350×350×250
14×14×10
355.6
377
273
273
279
257
350×350×200
14×14×8
355.6
377
219.1
219
279
248
350×350×150
14×14×6
355.6
377
168.3
159
279
238
Production Process:
Material Selection: We primarily source raw materials from leading steel mills such as Baosteel, TPCO, Yanbao, Baotou Steel, Changbao, and Huarun. We select tubes with smooth internal/external surfaces, uniform wall thickness, and a preference for higher manganese content to ensure a superior final appearance.
Material Inspection: Incoming materials undergo dimensional checks and chemical composition analysis.
Warehousing: Approved materials are stored in inventory.
Cutting: Tubes are cut to length with sufficient machining allowance. Burrs and metal chips are removed.
Bending & Forming: Tubes are heated using medium-frequency induction heaters and formed via pushing with precision dies. Dies are re-polished every 48 hours of operation to maintain strict dimensional tolerances.
Heat Treatment: Stress relief annealing (tempering) is performed.
End Machining: Bevels are cut on 90-degree CNC lathes to an angle of 37.5° ± 0.25°. The land (flat edge at the end of the bevel) is sized according to the pipe diameter. The land ensures a flush fit for butt welding and prevents burn-through during the TIG root pass.
Visual Inspection: Surfaces are checked for defects like scratches, peeling, or pitting.
Chemical Analysis: Composition is verified using imported handheld spectrometers.
Dimensional Inspection: Checks include outside diameter, wall thickness, ovality, and straightness.
Mechanical Testing: Tests include flattening and flaring to validate performance.
Sandblasting: A fine grit is used to create a uniform surface finish without excessive pitting.
Painting: Surfaces are evenly coated using environmentally friendly spray equipment.
Marking: Legible black background with white lettering is applied using a marking machine.
Packaging: Products are packed in wooden cases or on pallets, secured with steel strapping, and wrapped in plastic film for weather and dust protection.
Shipping: Careful handling using forklifts and overhead cranes ensures secure and orderly loading for transport.
Quality Assurance & Company Profile:
Certifications: ISO 9001 Quality Management System, Environmental Management System, Occupational Health & Safety Assessment Series, AAA Credit Rating, and SGS International Certification.
Quality Control: An integrated international ERP system manages production, supplemented by a secondary manual quality inspection to guarantee a 100% pass rate.
Production Capacity: Annual output of 20,000 tons of pipe fittings.
Facilities & Workforce: 7,000 sqm storage warehouse and a team of 200 employees.
R&D & Customization: A 300 sqm sample room supports our in-house R&D and ODM/ custom manufacturing capabilities.
Service: We offer straightforward cooperation, responsive service, and efficient logistics.
Experience: A decade of expertise in international export.