JIS DIN 201 Igwe anaghị agba nchara
JIS DIN 201 Igwe anaghị agba nchara
Paịpụ ígwè anaghị agba nchara bụ otu n'ime ihe ndị a na-ejikarị eme ihe n'ụlọ na injinịa. Paịpụ ígwè anaghị agba nchara bụ ogwe ígwè nwere oghere, ọtụtụ paịpụ eji ebufe mmiri mmiri, dị ka mmanụ, gas, mmiri, gas, uzuoku, ihe mgbanwe okpomọkụ, igwe igwe.
Ngwaahịa eriri igwe anaghị agba nchara:
igwe anaghị agba nchara eriri igwe tube
igwe anaghị agba nchara tube eriri igwe
ọkpọkọ eriri igwe anaghị agba nchara
igwe anaghị agba nchara eriri igwe anwụrụ
ndị na-enye igwe anaghị agba nchara eriri igwe tube
Ndị na-emepụta tube igwe anaghị agba nchara
igwe anaghị agba nchara ọkpọkọ ọkpọkọ
Nkọwapụta
Ọkọlọtọ:ASTM A-312, ASTM A-269, ASTM A-632, ASTM A-213, DIN 17458, DIN17456 JIS G3463, JIS G3459, JIS G3448
Ọkwa Ihe:201/202/304/316
Dayameta Mpụta:0.1mm–8mm
Ọkpụrụkpụ:0.05mm – 2.1mm
Ogologo:2440mm, 3050mm, 5800mm, 6000mm, 6100mm ma ọ bụ dịka arịrịọ ndị ahịa si dị
Ndidi:a) Dayameta Mpụta: +/- 0.2mm
b) Ọkpụrụkpụ: +/- 10% MAỌBỤ dịka arịrịọ ndị ahịa si dị
c) Ogologo: +/- 10mm
Elu:Satin / Ntutu isi: 180#, 320#
Polish:400#, 600#, 800# ma ọ bụ elu enyo
Ngwa:A na-ahazi ya n'ime ihe mgbochi, ihe mgbochi aka, ọnụ ụzọ na windo
NKWEKỌTA
Akpa plastik / nkwakọ ngwaahịa a kpara akpa (biko zitere anyị nkọwa ngwugwu ma ọ bụrụ na ị nwere ihe ndị ọzọ achọrọ)
Ngwakọta kemịkalụ
| Ọkwa | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | N (Max) | Cu/Ndị ọzọ |
| 304 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.00-20.00 | 8.00-10.50 | - | 0.1 | - |
| 304L | 0.03 | 2 | 0.045 | 0.03 | 1 | 18.00-20.00 | 8.00-12.00 | - | 0.1 | - |
| 310S | 0.08 | 2 | 0.045 | 0.03 | 1.5 | 24.00-26.00 | 19.00-22.00 | - | - | - |
| 316 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.00-18.00 | 10.00-14.00 | 2.00-3.00 | - | - |
| 316L | 0.03 | 2 | 0.045 | 0.03 | 1 | 16.00-18.00 | 10.00-14.00 | 2.00-3.00 | 0.1 | - |
Ihe 201 202 304 316 S31803 S32750
C ≤0.15 ≤0.15 ≤0.08 ≤0.08 ≤0.030 ≤0.030
Si ≤1.00 ≤1.00 ≤1.00 ≤1.00 ≤1.00 ≤0.80
Mn 5.5-7.5 7.5-10.0 ≤2.00 ≤2.00 ≤2.00 ≤1.20
P ≤0.060 ≤0.060 ≤0.045 ≤0.045 ≤0.030 ≤0.035
S ≤0.030 ≤0.030 ≤0.030 ≤0.030 ≤0.020 ≤0.020
Cr 16-18 17-19 18-20 16-18 21-23 21-23
Ni 3.5-5.5 4.0-6.0 42958 43022 4.5-6.5 6.0-8.0
Mo 2.0-3.0 2.5-3.5 3.0-5.0
N ≤0.25 ≤0.25 0.08-0.2 0.24-0.32
Cu ≤0.50
Njirimara igwe
Ihe dị na ya 201 202 304 316 S31803 S32750
Ike nrụgide (MPa) ≥655 ≥620 ≥515 ≥515 ≥620 ≥800
Ike Mmepụta (MPa) ≥260 ≥310 ≥205 ≥205 ≥450 ≥550
Ogologo (%) ≥35 ≥35 ≥35 ≥35 ≥25 ≥15
Ike siri ike (HV) ≤230 ≤230 ≤200 ≤200 ≤303 ≤323
Ihe Ndị Ọzọ A Chọrọ
Akara: ọkwa ihe, ọkọlọtọ, nkọwapụta, nọmba okpomọkụ.
Ọgwụgwọ Elu: A na-egbuke egbuke, a na-eme ka elu dị mma ma dị mma n'èzí ma n'ime.
Ngwugwu: akpa ákwà mpempe akwụkwọ, igbe osisi ma ọ bụ igbe ígwè
Asambodo nnwale igwe: dịka EN 10204 3.2 si dị
Nnyocha: Nnyocha nke ndị ọzọ, ma ọ bụ site na clints
Nkọwa Ụlọ Ọrụ:
Ụlọ ọrụ anyị nwere usoro mmepụta atọ nke tube igwe anaghị agba nchara a kpụkọrọ akpụkọ, paịpụ ígwè anaghị agba nchara, anyị nwere ahụmịhe mbupụ ihe karịrị afọ iri, dịka ịgbagọ, ịgbatị, ịkpụ osisi, ịcha stampụ, ịcha mma na ihe ndị ọzọ, ngwaahịa igwe anaghị agba nchara anyị nke a na-ejikarị eme ihe n'ime ihe mkpuchi ụlọ ịsa ahụ, ihe ndị e ji aka kpaa, ngwaike, na ihe ndị e ji ekpo ọkụ mmiri, ihe ndị e ji ekpo ọkụ n'ụlọ nkwari akụ na ihe ndị ọzọ. Ụlọ ọrụ anyị nwere olileanya na ndị ahịa obodo na mba ofesi ga-enye eserese ma ọ bụ ihe atụ.
Ọ bụrụ na ịchọrọ ịmatakwu gbasara paịpụ/tube ígwè anaghị agba nchara, biko kpọtụrụ anyị.
Ọ bụrụ na ịchọrọ ịmatakwu gbasara paịpụ/tube ígwè anaghị agba nchara, biko kpọtụrụ anyị.
| Tube ígwè square (mm) | Akụkụ anọ Steel Tube (mm) | Tube ígwè gbara gburugburu (mm) |
| 10 × 10 × 0.6 ~ 3.0 | 10 × 20 × 0.6 ~ 3.0 | 6 × 0.6 ~ 1.0 |
| 15 × 15 × 0.6 ~ 3.0 | 20 × 30 × 0.6 ~ 3.0 | 12 × 0.6 ~ 1.5 |
| 20 × 20 × 0.6 ~ 3.0 | 20 × 40 × 0.6 ~ 3.0 | 13 × 0.6 ~ 1.5 |
| 25 × 25 × 0.6 ~ 3.0 | 25 × 50 × 0.6 ~ 3.5 | 16 × 0.6 ~ 2.0 |
| 30 × 30 × 0.6 ~ 3.5 | 30 × 50 × 0.6 ~ 3.5 | 19 × 0.6 ~ 3.0 |
| 40×40×0.6~3.5 | 40 × 60 × 0.6 ~ 3.5 | 20 × 0.6 ~ 3.0 |
| 50 × 50 × 0.6 ~ 3.5 | 40×80×0.6~3.5 | 22 × 0.6 ~ 3.0 |
| 60×60×0.6~3.5 | 60×80×1.0~6.0 | 25 × 0.6 ~ 3.0 |
| 70×70×0.6~3.5 | 50 × 100 × 1.0 ~ 6.0 | 27 × 0.6 ~ 3.0 |
| 75×75×0.6~3.5 | 60×120×1.0~6.0 | 32 × 0.6 ~ 3.0 |
| 80×80×1.0~6.0 | 80 × 120 × 2.0 ~ 8.0 | 40 × 0.6 ~ 3.5 |
| 100 × 100 × 2.0 ~ 8.0 | 80 × 160 × 2.0 ~ 8.0 | 38 × 0.6 ~ 3.0 |
| 120 × 120 × 2.0 ~ 8.0 | 100 × 150 × 2.0 ~ 8.0 | 48×0.6~3.5 |
| 150 × 150 × 2.0 ~ 8.0 | 100 × 200 × 2.0 ~ 8.0 | 60 × 0.6 ~ 3.5 |
| 200 × 200 × 4.0 ~ 16.0 | 150 × 250 × 4.0 ~ 12.0 | 76 × 0.6 ~ 3.5 |
| 250 × 250 × 4.0 ~ 16.0 | 200 × 300 × 4.0 ~ 16.0 | 89 × 1.0 ~ 6.0 |
| 300 × 300 × 4.0 ~ 16.0 | 300 × 400 × 4.0 ~ 16.0 | 104 × 1.0 ~ 6.0 |
| 400×400×4.0~16.0 | 300 × 500 × 4.0 ~ 16.0 | 114 × 1.0 ~ 6.0 |
Njirimara anụ ahụ nke ọkpọkọ polishing ígwè anaghị agba nchara:
| Ọkwa | Ihe mejupụtara ya, % | |||||||||
| Kabọn, | Manga- | Phos- | sọlfọ, | Silikọn, | Nickel | Chromium | Molybdenum | Titanium | Columbium + Tantalum | |
| Austenitik | ||||||||||
| 301 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 6.0–8.0 | 16.0–18.0 | … | … | … |
| 302 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0–10.0 | 17.0–19.0 | … | … | … |
| 304 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 8.0–11.0 | 18.0–20.0 | … | … | … |
| 304L | 0.035A | 2.00 | 0.040 | 0.030 | 1.00 | 8.0–13.0 | 18.0–20.0 | … | … | … |
| 305 | 0.12 | 2.00 | 0.040 | 0.030 | 1.00 | 10.0–13.0 | 17.0–19.0 | … | … | … |
| 309S | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 12.0–15.0 | 22.0–24.0 | … | … | ... |
| 309S-Cb | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 12.0–15.0 | 22.0–24.0 | … | … | B |
| 310S | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 19.0–22.0 | 24.0–26.0 | … | … | … |
| 316 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 10.0–14.0 | 16.0–18.0 | 2.0–3.0 | … | … |
| 316L | 0.035A | 2.00 | 0.040 | 0.030 | 1.00 | 10.0–15.0 | 16.0–18.0 | 2.0–3.0 | … | … |
| 317 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 11.0–14.0 | 18.0–20.0 | 3.0–4.0 | … | … |
| 321 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 9.0–13.0 | 17.0–20.0 | … | C | … |
| 330 | 0.15 | 2.00 | 0.040 | 0.030 | 1.00 | 33.0–36.0 | 14.0–16.0 | … | … | … |
| 347 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 9.0–13.0 | 17.0–20.0 | … | … | B |
| 429 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 kachasị | 14.0–16.0 | … | … | … |
| 430 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 kachasị | 16.0–18.0 | … | … | … |
| 430-Ti | 0.10 | 1.00 | 0.040 | 0.030 | 1.00 | 0.075 kachasị | 16.0–19.5 | … | 5 × C nkeji, | … |
| 0.75 kachasị | ||||||||||
▼Ọkwa ihe eji eme tube igwe anaghị agba nchara/tube a kpụkọrọ akpụkọ:
| Amerịka | JAMENỊ | JAMENỊ | FRANSỊ | JAPAN | ỊTALỊ | SWIDEN | UK | EU | SPAIN | RỌSHỊA |
| AISI | DIN 17006 | WN 17007 | AFNOR | JIS | UNI | SIS | BSI | EURONORM | ||
| 201 | SUS 201 | |||||||||
| 301 | X 12 CrNi 17 7 | 1.4310 | Z 12 CN 17-07 | SUS 301 | X 12 CrNi 1707 | 23 31 | 301S21 | X 12 CrNi 17 7 | X 12 CrNi 17-07 | |
| 302 | X 5 CrNi 18 7 | 1.4319 | Z 10 CN 18-09 | SUS 302 | X 10 CrNi 1809 | 23 31 | 302S25 | X 10 CrNi 18 9 | X 10 CrNi 18-09 | 12KH18N9 |
| 303 | X 10 CrNiS 18 9 | 1.4305 | Z 10 CNF 18-09 | SUS 303 | X 10 CrNiS 1809 | 23 46 | 303S21 | X 10 CrNiS 18 9 | X 10 CrNiS 18-09 | |
| 303 Se | Z 10 CNF 18-09 | SUS 303 Se | X 10 CrNiS 1809 | 303S41 | X 10 CrNiS 18-09 | 12KH18N10E | ||||
| 304 | X 5 CrNi 18 10 X 5 CrNi 18 12 | 1.4301 1.4303 | Z 6 CN 18-09 | SUS 304 | X 5 CrNi 1810 | 23 32 | 304S15 304S16 | X 6 CrNi 18 10 | X 6 CrNi 19-10 | 08KH18N10 06KH18N11 |
| 304 N | SUS 304N1 | X 5 CrNiN 1810 | ||||||||
| 304 H | SUS F 304H | X 8 CrNi 1910 | X 6 CrNi 19-10 | |||||||
| 304 L | X 2 CrNi 18 11 | 1.4306 | Z 2 CN 18-10 | SUS 304L | X 2 CrNi 1911 | 23 52 | 304S11 | X 3 CrNi 18 10 | X 2 CrNi 19-10 | 03KH18N11 |
| X 2 CrNiN 18 10 | 1.4311 | Z 2 CN 18-10-Az | SUS 304LN | X 2 CrNiN 1811 | 23 71 | |||||
| 305 | Z 8 CN 18-12 | SUS 305 | X 8 CrNi 1812 | 23 33 | 305S19 | X 8 CrNi 18 12 | X 8 CrNi 18-12 | |||
| Z 6 CNU 18-10 | SUS XM7 | X 6 CrNiCu 18 10 4 Kd | ||||||||
| 309 | X 15 CrNiS 20 12 | 1.4828 | Z 15 CN 24-13 | SUH 309 | X 16 CrNi 2314 | 309S24 | X 15 CrNi 23 13 | |||
| 309 S | SUS 309S | X 6 CrNi 2314 | X 6 CrNi 22 13 | |||||||
| 310 | X 12 CrNi 25 21 | 1.4845 | SUH 310 | X 22 CrNi 2520 | 310S24 | 20KH23N18 | ||||
| 310 S | X 12 CrNi 25 20 | 1.4842 | Z 12 CN 25-20 | SUS 310S | X 5 CrNi 2520 | 23 61 | X 6 CrNi 25 20 | 10KH23N18 | ||
| 314 | X 15 CrNiSi 25 20 | 1.4841 | Z 12 CNS 25-20 | X 16 CrNiSi 2520 | X 15 CrNiSi 25 20 | 20KH25N20S2 | ||||
| 316 | X 5 CrNiMo 17 12 2 | 1.4401 | Z 6 CND 17-11 | SUS 316 | X 5 CrNiMo 1712 | 23 47 | 316S31 | X 6 CrNiMo 17 12 2 | X 6 CrNiMo 17-12-03 | |
| 316 | X 5 CrNiMo 17 13 3 | 1.4436 | Z 6 CND 17-12 | SUS 316 | X 5 CrNiMo 1713 | 23 43 | 316S33 | X 6 CrNiMo 17 13 3 | X 6 CrNiMo 17-12-03 | |
| 316 F | X 12 CrNiMoS 18 11 | 1.4427 | ||||||||
| 316 N | SUS 316N | |||||||||
| 316 H | SUS F 316H | X 8 CrNiMo 1712 | X 5 CrNiMo 17-12 | |||||||
| 316 H | X 8 CrNiMo 1713 | X 6 CrNiMo 17-12-03 | ||||||||
| 316 L | X 2 CrNiMo 17 13 2 | 1.4404 | Z 2 CND 17-12 | SUS 316L | X 2 CrNiMo 1712 | 23 48 | 316S11 | X 3 CrNiMo 17 12 2 | X 2 CrNiMo 17-12-03 | 03KH17N14M2 |
| X 2 CrNiMoN 17 12 2 | 1.4406 | Z 2 CND 17-12-Az | SUS 316LN | X 2 CrNiMoN 1712 | ||||||
| 316 L | X 2 CrNiMo 18 14 3 | 1.4435 | Z 2 CND 17-13 | X 2 CrNiMo 1713 | 23 53 | 316S13 | X 3 CrNiMo 17 13 3 | X 2 CrNiMo 17-12-03 | 03KH16N15M3 | |
| X 2 CrNiMoN 17 13 3 | 1.4429 | Z 2 CND 17-13-Az | X 2 CrNiMoN 1713 | 23 75 | ||||||
| X 6 CrNiMoTi 17 12 2 | 1.4571 | Z6 CNDT 17-12 | X 6 CrNiMoTi 1712 | 23 50 | 320S31 | X 6 CrNiMoTi 17 12 2 | X 6 CrNiMoTi 17-12-03 | 08KH17N13M2T 10KH17N13M2T | ||
| X 10 CrNiMoTi 18 12 | 1.4573 | X 6 CrNiMoTi 1713 | 320S33 | X 6 CrNiMoTI 17 13 3 | X 6 CrNiMoTi 17-12-03 | 08KH17N13M2T 10KH17N13M2T | ||||
| X 6 CrNiMoNb 17 12 2 | 1.4580 | Z 6 CNDNb 17-12 | X 6 CrNiMoNb 1712 | X 6 CrNiMoNb 17 12 2 | 08KH16N13M2B | |||||
| X 10 CrNiMoNb 18 12 | 1.4583 | X 6 CrNiMoNb 1713 | X 6 CrNiMoNb 17 13 3 | 09KH16N15M3B | ||||||
| 317 | SUS 317 | X 5 CrNiMo 1815 | 23 66 | 317S16 | ||||||
| 317 L | X 2 CrNiMo 18 16 4 | 1.4438 | Z 2 CND 19-15 | SUS 317L | X 2 CrNiMo 1815 | 23 67 | 317S12 | X 3 CrNiMo 18 16 4 | ||
| 317 L | X 2 CrNiMo 18 16 4 | 1.4438 | Z 2 CND 19-15 | SUS 317L | X 2 CrNiMo 1816 | 23 67 | 317S12 | X 3 CrNiMo 18 16 4 | ||
| 330 | X 12 NiCrSi 36 16 | 1.4864 | Z 12NCS 35-16 | SUH 330 | ||||||
| 321 | X 6 CrNiTi 18 10 X 12 CrNiTi 18 9 | 1.4541 1.4878 | Z 6 CNT 18-10 | SUS 321 | X 6 CrNiTi 1811 | 23 37 | 321S31 | X 6 CrNiTi 18 10 | X 6 CrNiTi 18-11 | 08KH18N10T |
| 321 H | SUS 321H | X 8 CrNiTi 1811 | 321S20 | X 7 CrNiTi 18-11 | 12KH18N10T | |||||
| 329 | X 8 CrNiMo 27 5 | 1.4460 | SUS 329J1 | 23 24 | ||||||
| 347 | X 6 CrNiNb 18 10 | 1.4550 | Z 6 CNNb 18-10 | SUS 347 | X 6 CrNiNb 1811 | 23 38 | 347S31 | X 6 CrNiNb 18 10 | X 6 CrNiNb 18-11 | 08KH18N12B |
| 347 H | SUS F 347H | X 8 CrNiNb 1811 | X 7 CrNiNb 18-11 | |||||||
| 904L | 1.4939 | Z 12 CNDV 12-02 | ||||||||
| X 20 CrNiSi 25 4 | 1.4821 | |||||||||
| UNS31803 | X 2 CrNiMoN 22 5 | 1.4462 | ||||||||
| UNS32760 | X 3 CrNiMoN 25 7 | 1.4501 | Z 3 CND 25-06Az | |||||||
| 403 | X 6 Cr 13 X 10 Cr 13 X 15 Cr 13 | 1,4000 1.4006 1.4024 | Z 12 C 13 | SUS 403 | X 12 Cr 13 | 23 02 | 403S17 | X 10 Cr 13 X 12 Cr 13 | X 6 Cr 13 | 12Kh13 |
| 405 | X 6 CrAl 13 | 1.4002 | Z 6 CA 13 | SUS 405 | X 6 CrAl 13 | 405S17 | X 6 CrAl 13 | X 6 CrAl 13 | ||
| X 10 CrAl 7 | 1.4713 | Z 8 CA 7 | X 10 CrAl 7 | |||||||
| X 10 CrAl 13 | 1.4724 | X 10 CrAl 12 | 10Kh13SYu | |||||||
| X 10 CrAl 18 | 1.4742 | X 10 CrSiAl 18 | 15Kh18SYu | |||||||
| 409 | X 6 CrTi 12 | 1.4512 | Z 6 CT 12 | SUH 409 | X 6 CrTi 12 | 409S19 | X 5 CrTi 12 | |||
| X 2 CrTi 12 | ||||||||||
| 410 | X 6 Cr 13 X 10 Cr 13 X 15 Cr 13 | 1,4000 1.4006 1.4024 | Z 10 C 13 Z 12 C 13 | SUS 410 | X 12 Cr 13 | 23 02 | 410S21 | X 12 Cr 13 | X 12 Cr 13 | 12Kh13 |
| 410 S | X 6 Cr 13 | 1,4000 | Z 6 C 13 | SUS 410S | X 6 Cr 13 | 23 01 | 403S17 | X 6 Cr 13 | 08Kh13 |
Ụlọ ọrụ mmepụta ihe
Uru dị mma:
A na-emesi obi ike na ngwaahịa anyị maka akara njikwa na ngalaba mmanụ na gas abụghị naanị n'oge usoro nrụpụta a na-achịkwa kamakwa site na nnwale ngwaahịa emechara. Nnwale ndị a na-ahụkarị gụnyere:
1. Nnwale ndị na-anaghị emebi emebi
2. Nnwale Hydrostatic
3. Njikwa imecha elu
4. Nha nha ziri ezi
5. Nnwale ọkụ na coning
6. Nnwale ihe onwunwe igwe na kemịkalụ
Ngwa caillary tube
1) Ụlọ ọrụ ngwaọrụ ahụike
2) njikwa okpomọkụ ụlọ ọrụ mmepụta ihe na-eduzi okpomọkụ, ihe mmetụta ejiri paịpụ, temometa tube
3) Mkpịsị ugodi nlekọta ụlọ ọrụ isi tube
4) antenna micro-tube, ụdị dị iche iche nke obere antenna igwe anaghị agba nchara
5) Nwere ọtụtụ obere dayameta eletrọniki, ígwè anaghị agba nchara
6) Ntuchi agịga ọla
7) Elekere, foto
8) Tube antenna ụgbọ ala, antenna mmanya site na iji tubes, antenna tube
9) Ngwa ihe osise laser iji tube igwe anaghị agba nchara
10) Ngwa ịkụ azụ, ihe eji achọ mma, Yugan na-enweta ya
11) Nri nwere capillary ígwè anaghị agba nchara
12) ụdị mkpịsị ekwentị mkpanaaka na mkpịsị kọmputa niile
13) Ụlọ ọrụ paịpụ ọkụ, ụlọ ọrụ mmanụ
14) Ndị na-ebi akwụkwọ, agịga igbe dị jụụ
15) Dọpụta ọkpọkọ ígwè anaghị agbaze agbaze okpukpu abụọ nke ejiri na windo jikọtara ọnụ
16) Ụdị ọkpọkọ ígwè anaghị agba nchara dị iche iche nke obere dayameta ụlọ ọrụ mmepụta ihe
17) Ịnye ihe n'ụzọ ziri ezi site na agịga ígwè anaghị agba nchara
18) Igwe okwu, ekweisi na igwe okwu iji tube igwe anaghị agba nchara, na ihe ndị ọzọ












